Universal set stack counter?
 

There are various addons that work with one set each (Blood Moon, Yandir, etc.) There are also LUI and/or Bandits, but they are not very fitting for such sets. You need three timers — stack decay, then active effect decay, then cooldown timer. With Bandits' widgets, for example, I can do only two former.

I'd like something both simple (only for sets, a window that shows, say, up to three sets, autoswitching from stacks count to proc decay to cooldown, nothing fancy, just largeish numbers) and universal (so I don't install separate addon for all my sets).

Coincidentally, is there an easy way to count stacks on target, for things like Relequen?

I doubt there ever will be any addon which is doing all this together in one but there is one addon supporting procs for some of the monster set addons at least:
https://www.esoui.com/downloads/info...cSetTimer.html

But for the stacks etc. I guess you will need to install seperate addons as all of the sets are different and it would be hard to create 1 addon to support all of them.