Implemented

Cinnamon:
    Support for HybridSleep
    network applet: Rescan for wireless network
    cinnamon-settings: spices revamp
    nemo-preview support animated gifs
    better translations for cinnamon-session, cinnamon-settings-daemon, nemo-extensions

Slick:
    indicator tooltips
    support for numlockx
    optional panel indicators
    LDAP options (hiding user list, manual login)
    Added option for auto login

mintsources ported to GTK3

mintinstall:
    UI and nagivation revamp
    GTK3 + HiDPI
    User mode + aptdaemon backend
    speed improvements

mintbackup:
    complete revamp
    user mode + aptdaemon backend
    revamped UI
    revamped threading and performance
    restricted to home dir
    always preserves perms/times

mintdrivers:
    better HiDPI support
    better CPU microcode detection/presentation

Xapp window-progress now supported by:
    cinnamon
    nemo
    mintinstall
    mintstick
    mintdrivers
    mintbackup
    synaptic dialogs (mintlocale, mintsources, mintupdate)

xplayer:
    removed xplayer-mozilla
    better fullscreen statusbar

xreader:
    Move history to Go menu, bring back navigation buttons into toolbar

nemo:
    provide configure button for extensions

mintreport:
    software crash troubleshooting

Done - Awaiting repos/build

remove mintnanny and mintupload from default software selection

cinnamon:
    enable hidpi by default
xfce:
    upgrade xfce-terminal to 0.8.0?

software/repo:
    ensure the presence of google-earth and skype in repo/featured
    add timeshift
    install mp3 support without codecs

chromium default config isn't applied (and DDG is set without https)

Cinnamon 3.6

cinnamon:
    cinnamon slow to start after boot --> delay execution of appsys/docinfo until the DE is loaded
    reconsider inhibiting onscreen keyboards (our keyboard doesn't do locales layouts and it's quite ugly)

nemo:
    Mouse-cursor lag when moving files
    Skip GVFS when possible
    ability to search string within files and open xed at line number

Linux Mint 18.3

desktop-search:
    local files
    web engines
    recent
    apps
    dictionary
    translations

mintwelcome:
    blurry icons in HiDPI
    consider accompanying the user and hinting at things he/she might want to do (codecs, popular settings, popular apps etc..)

mintupdate:
    safeguard against package removals (for instance, don't let users perform updates which would remove sensitive packages).
    notice to reboot the computer when appropriate
    kernelwindow: make kernel series column desc-sorted and select the active series

mintreport:
    mint notices
    implement rules and notification system:
    dmesg errors
    foreign packages if pinned by mint
    wrong lsb info..etc.
    slow boot sequence
    slow shutdown sequence

system:
    compiler optimization: consider optimizing compiled binaries for Cinnamon/Xapps

Roadmap

implement an alarm clock

cinnamon:
    menu keywords: looking for display in menu shows color first
    consider: notifications stay on desktop until mouse is moved + a few secs
    preferences > keyboard > custom shortcuts. Used with a Spanish keyboard layout. Recorded: crtl+number and ctrl+Shift+number (e.g. ctrl+1 and ctrl+shift+1 = ctrl+!) they are recorded correctly. When using the shortcut the command defined in the shift combination is triggered with just ctrl+number (i.e. ctrl+1). The complete combination triggers nothing (i.e. ctrl+shift+1 does nothing) and the comand defined in ctrl+number can never be used. This worked in 17.3.
    track/troubleshoot shutdown sequence (user should know what is happening when shutdown isn't immediate)
    track/troubleshoot vsync, compositing, unredirected windows and policy
    menu: consider adopting this layout (https://raw.githubusercontent.com/The-Panacea-Projects/Gnomenu/master/Screenshot.png), same as ours/mintmenu, only better.
    todo list applet/desklet
    calendar events applet/desklet
    multiple clocks https://github.com/simonwiles/cinnamon_applets
    network applet: airplane mode (quick way to rfkill all)
    nemo: retire computer:/// place (which is completely useless) or revamp it into something better
    alt-tab and panel use icon provided by appsys, ignoring icon set by the application itself (example: a python window using widow.set_icon_name())
    actions in panel launchers aren't translated if not present in .desktop file
    gnome-system-monitor moves out of place in Expo
    When using Cinnamon bar at top, and secondary monitor with higher height than the main display, some apps like KDE Apps (Krita, Kdenlive) or Wine Based Apps (teamviewer) will display menus from toolbar in the wrong place. Being more specific: The menus will be displayed in the position that they should be displayed at main monitor, however in this case the window is maximized in the secondary monitor.
    Is there any reason why there are two names for the same item, eg. "Trash" and "Rubbish Bin"? Would it be better to standardise on only one name?
    add gnome-screenshot to panel, right-click and select "Take screenshot of a selected area". This runs gnome-screenshot -a.. it should work but it doesn't. Is it because of the panel launcher capturing the click event or something?

xapps
    add an option to blank other monitors when in full screen in xviewer/xreader/pix
    implement an app-sharing protocol to quickly move a document from one app to another

    gestures support:
        pinch:
            zoom document in pix
            zoom view in nemo

        swipe:
            previous/next document in pix

        scroll:
            sound-volume/seek in xplayer

        click:
            pause/resume in xplayer

        double-click:
            full-screen in xplayer
            full-screen in xviewer

    pix
        doesn't rotate videos when playing them
        vignettes should look better, and the same in all themes
        support prefer-dark-themes
        treeview in sidebar shows unecessary "(empty)" when dirs have no subdirs

artwork:
    Tray icons are black with mint-y themes.
    Mint-Y themes Shade option is unavailable
    mint-x-icons: network status icons have a dark background in panel 33px and bigger (sound icon looks wrong in 41px and bigger).
    mint-y The maximize/restore window control button doesn’t change visually between in maximized and restored state (default theme and Mint-Y-Dark)

kde:
    SDDM stays in autologin after OEM install

R&D

mintupdate:
    prompt for reboot after kernel install?

nemo:
    remove duplication between Eject and Safely Remove (for removable devices).

system
    consider adding snapd
    consider adding flatpak
    consider enabling recommends

review logind.conf changes in:
    MATE
    Xfce
    KDE

ubiquity:
    inhibit sessions via libxapp (need to do it in KDE too)

libindicator++?
    client-rendered icon/menu (ala libindicator)
    support all the features from GTK statusicon (tooltips, left/right clicks etc..)

use aptdaemon?
    aptdaemon doesn't work in LMDE and is being abandoned upstream
    in mintupdate, remove dep on synaptic, remove admin rights for checkAPT.py
    in mintwelcome and codec menu entry, switch from apturl to aptdaemon
    in mintsources, remove dep on synaptic
    remove synaptic from default selection
    remove synaptic from mintmenu's favorites

network discovery:
    easy out-of-the-box interactions (messaging/presence/file-sharing) over the LAN

windows compatibility layer:
    seamless wine integration

HiDPI support:
    upstream apps using GTK2: Gimp, Hexchat, VLC, Pidgin, Tomboy.
    mint projects using GTK2: gksu

LMDE 3

gnome-calculator app title is "gnome-calculator"
live-installer should show partition labels