Well, they haven’t let it go yet, I think it really just takes people keeping up usage and following up bug reports. Latte dock wrapping up did put a wrench in things, because panels aren’t Activity unique, unfortunately. You might be able to bodge something with widgets that works since those are per-activity still.

And I just can’t swing Gnome, there’s so many things about it that piss me off within minutes of booting into it. If Plasma went away tomorrow, I’d probably have to make do with XFCE or Mate.