So, I know I'm super late to this discussion, and ... actually, have probably already commented on it. But a few new cents to add to the pile.
I enjoy tag. It's basically the only thing left in the game that actually makes me ... play the game. But, while I enjoy it, I can't actually remain competitive. I can stay at tag 2-3, depending on the week, but actually getting/staying at tag4 isn't feasable, simply because of the amount of time it takes for each fight.
And, for better or worse, that's directly related to UDK. And yeah, before you ask - I do use him on my offense, and defense teams. UDK is actually a great meta-changing champ. He adds lots of counterplay options.
However, the way that tag is currently set up, it doesn't lend itself towards the kind of gameplay UDK enables. Case in point - last night I was at about 850 rating on tag3, which is in the red. I was at that rating because I basically didn't play tag all week. So, I figured to myself, I'll just climb back up. How hard could it be to win a dozen fights, or so?
The answer is - after about three hours, "too hard". I won basically every one of my fights - but each tag fight took me a minimum of 15 minutes, with some going easily into the 30 minute range. And that is 100% because of UDK. Every team he's in, I know from the outset that I'll win. The problem is, it just takes forever.
And you know what? The solution to this is not to just get rid of him. The solution is to fundamentally change tag. Get rid of this "20 free daily tokens + very cheap refills". Make tag capped at 5 fights per day, and get rid of the refills entirely - both from quests, and buyable. And, as we'll surely see - apply this same concept to live arena.
Plarium, we simply don't have the time to deal with the amount of stuff in this game. And that's going to wear people down. It's already basically killed off my clan, and I'm sure your own internal metrics show this too. Stop playing the attrition game - just throw us a bone.