I am very excited for Pop OS to get the new Cosmic desktop. Not really a specific feature but an entirely new DE that is quite different from the others and built from the ground up in Rust. Hopefully the first version won't be totally broken and full of bugs!

KDE's VRR and XWayland fractional scaling implementations are pretty dope. Wlroots pls

GNOME desktop icons that aren't an extension that isn't as good as something native.

Wayland needs stacking window managers that aren't just KDE and Gnome. I want more things like openbox. There's labwc but that's it.

And also Wayland needs more customization programs designed around stacking window managers. Waybar, yambar, and others are all only designed for tiling window managers.

Literally just button remapping support for my MX Ergo.

And for the fool who always comes into these threads to tell me again that I must not have tried in several years, I tried last month. Talked to the Solaar dev, tried to reach out to Logitech, literally nothing to be done.

XFCE, press f4 to open a terminal pane at the bottom of the file manager, like in KDE.

There's not much I'm "dying" for in Cinnamon; it's very complete.

I wouldn't mind if the Nemo Actions system got a GUI editor. I think it's such a little known feature...if you go to ~/local/share/nemo/actions, you can add config files that can add items to the right click context menu, including but not limited to shell scripts. I have a few basic ImageMagick scripts that allow me to do things like edit images or convert them from one file format to another just by right clicking a file.

Some kind of easy notification system and panel/dock/taskbar notification emblems. The support for stuff like that is incredibly spotty right now and is one of the final things preventing me from switching off windows.

EDIT: Have found a decent solution to this via Dash to Panel. I have been running Zorin OS for over the last month now on my main PCs!

GNOME mouse navigation + I3/Sway keyboard navigation.

I saw the cool feature of ChromeOS Desktop where you can save all open Window states inside a Workspace and resume them on another day again. Never used it on ChromeOS as I am not sure how but this seems easily possible soon with Plasma 6 where you can hibernate or rather store the current state of your Window.