What Tweak, Program, ... changes a Desktop Environment from unusable to great for you?
I have used Linux on and off for 15 years. I consider myself a casual user and stuck to the mainstream DEs (mostly KDE, XFCE and some Cinnamon).
Gnome has been a hurdle for me before and after the big version 40 changes, I couldn't get my head around how they handled the workspaces and workflow. At some point I I tried out an extension hat changed all of it.
It moves the workspaces to a vertical panel and the programs onto a horizontal panel. In a workspace you can view the programs full screen or tile them.
Several Programs inside a Workspace.
It's basically they same way Gnome works. However for some reason it just makes sense in my brain. No idea why.
(I'm looking at WMs that work in a similar way atm. Maybe I'll take the plunge away from DEs at some point)
Has such a small change ever saved a Desktop Environment for you and is essential if you ever install it?
I really like compositor/wm/DE which allow for keyboard driven movement of windows between workspaces and workspaces between monitors. Especially the latter requirement is only met by a few wms, e.g. sway/i3, hyprland.
I can't stand it if switching to the next workspace all workspaces on all monitors change. This makes it annoying to use with a second monitor that mostly display the same windows (e.g. messaging, video, docs).
I don't like Gnome but Dash to Panel at least makes it usable for me. As for tweaks, I always move KDE's taskbar to the top of the screen rather than bottom.
I'm not sure that I'd call vanilla GNOME (or any modern DE) unusable for me, but Tiling Assistant is really great. I'm looking forward to GNOME's upcoming tiling changes so I no longer have to rely on an extension to give me quarter tiling.
Dash to Dock is also nice, though I don't necessarily mind having to hit Super to see my dock.
Gnome's window sizing has always looked comical on my display. So I fix it with Orchis gtk compact theme. Also GSconnect is an irreplaceable utility for me.
Back when I was still on Gnome, I gave this a try and it was great - until Gnome got updated and it stopped working. And then they'd fix it, and Gnome got updated and it stopped working again. So I stopped using it because I couldn't deal with the constant breakages. I see that they still haven't updated it for Gnome 45, despite a bug report being opened for it over two months now. It's exactly because of breakages like this, and extension neglect from the authors, that I've stopped using Gnome and switched to KDE.
KDE worked great for me out-of-the-box, so I didn't install any third-party extensions. The only changes I've made is for aesthetics - moved the panel to the top, enabled a global menu and a side dock, for a more Gnome/macOS-style layout.
While that issue isn’t marked as closed, this PR was marked as merged two weeks ago. I honestly feel like a 6 week turnaround on what, from my quick skimming, was a rather major change in how extensions work in Gnome 45, is pretty reasonable. I understand where you’re coming from, but this comment reeks of entitlement.
You're thinking of just one extension, one instance. Now repeat this for EVERY single Gnome release, for pretty much all extensions (not just this one), and you can understand my frustration. Which is why I've left the Gnome ecosystem.
Also, it's not like v45 came out of the blue, the beta releases were available for quite a while prior to final release, and even before the final, the Gnome developers did warn that about the upcoming extension changes. So it's not like the Material Shell devs were unaware.
Edit: Also, the PR may have been merged but the updated version hasn't been released yet. Both the versions on Github and the Gnome extensions site are still the old release.
i3/window manager. When I log in to gnome I feel like I'm being dragged through molasses. I have an anxiety attack every time I see a window floating in front of another. My wrists creak and crack as my hand dances between keyboard and mouse. It almost lessens my interaction with the linux community because so many people are passionate about and discuss desktop environments and yet I don't really see one unless I'm having issues.
Tiling addons. I like having a full DE, but I also want tiling, so Pop!_Shell on GNOME and Polonium on KDE are invaluable (and yes, COSMIC looks really promising).
I frequently switch between audio outputs (headset for calls and focused gaming, speakers for other use). I installed an audio switcher applet to make changing that easier and faster. But cosmic is perfect for me other than that.
Workspace Matrix: provides a customizable n x m workspace grid, and a customizable pop-up that shows live preview of all workspaces and their windows (incl. e.g. video playing).
(screenshot from Workspace Matrix extension site, not mine)
In combination, these two features allow me very quick overview of everything I have open, presented in an ordered fashion, allowing quick, keyboard-driven application change.
I'm not aware that the exact features of Workspace Matrix are reproduced by anything in any other DE.
I loved that back on CDE on Solaris. But back then windows had borders you could reasonably click to bring the window to the front. Nowadays that would just be frustrating.