This is a good fix for the gun's current issues. Will tags have lifespan tweaks? Would there be adjustments to the number of tags allowed on the field at once?

I'd love it if I could stick tags on fellow players. If they dash, the tags detonate when they finish the dash, dealing dmg like always. The limits on tag duration/number would become more important for this, otherwise certain areas could be totally set up and we already have enough problems with this because we know where everything spawns (or might spawn). But it honestly wouldn't be that much of a problem considering spawn waves and general player impatience. Perhaps walking through any barriers, attacking, using a pickup, shielding, or even taking damage could neutralize tags on your person. If the tags could attach to other things (as OP has described), including players...and be detonated via dash when it's convenient... that would be a lot of fun playing. But then again, it would defeat the whole "use charge to set off the boom" thing, cause you could just prime up a bunch of enemies, shoot your team mate, and have them dash in. But that would also be fun. Unless you limit the dash boom to only tags on the knight who dashes, vs all tags in the vicinity. Or what if...instead of the dash, the player has to have a charged cata of any kind on them, and when they let THAT go, any tags on them go boom. Or you could just charge shoot them. That makes a lot more sense. I could ramble on for a good while. Team Catalyzer, go!

TL;DR: other factors? Can tags stick on knight butts too?

I consider anything that damages me to be an enemy, sorry. Like siege wheels. Some people count those as monsters, I don't. They're just enemies. I thought it would be a really cool thing to have a bunch of sticky balls hovering over spike traps. Sorta like inverting the hazard to enemies. Anyway, sorry for the confusion. I see you mean monsters. Juuuuust monsters. Yas.

But now I'm more confused:

OP Never said tags could stick to other things besides enemies. I said that if you detonate the tags and there would have been excess tags that had absolutely no effect (whether that effect be breaking boxes, blocks, ice on frozen allies, minerals, switches, etc.) then those excess tags would not detonate but re-attach to the nearest ally. . Re-attach to the nearest ally?

Darn those brain fart things.

I was wondering - how quickly would these reattach? Like the speed of Mask's haunted haze things (since you mentioned seeking)? If it's not an instant teleport, enemy movements might make it change direction to an enemy that happened to wander closer than the last targeted one - maybe. That would be fun to watch actually.