I used to use XFCE a lot, but the interface is just too lean for me. LXDE for me now when I need something lean and Cinnamon when I want a full desktop replacement. I find KDE just enough confusing and too "heavy" to learn to bother.
Yeah, KDE isn't my favorite, but everyone here was able to use it without having to retrain them, so it's what we went with. I was very glad I stuck to the "universal" desktop environments when making recommendations tho, makes life so much easier.
I hate that the Super (Windows) key is only a modifier. It's much easier and more familiar to hit that key and have the activities overview come up than alt+space or alt+f2 (whatever it actually is) for krunner.
How about making the LM box auto logon upon reboot. This will ensure desktop:0 is always running, then when you X2Go into it, you'll be a secondary connection, and your should should come from your desired location.
I suppose one could.
For the now, I'm using the dying monitor to sign in with. it'll work long enough to sign in before the video goes out on it.