Don’t get me wrong, I don’t have anything personal against you. I’m just trying to figure out why is tagging such a big of an issue for you. It becomes a second nature after some time. I’m now automatically pressing T whichever character I play with whenever I see a taggable enemy. It’s basically a twitch of an index finger, around 0.1 second.
I do understand that you find it boring to some extent when playing WHC. So, what other mechanic would make it more interesting? To be honest, one of the reasons why I love playing WHC is because apart from killing I can go ahead and contribute even more to my team by actively tagging enemies and giving other players a dmg boost. By doing that little extra active task it makes playing with WHC more interesting for me.
I’d skip this kind of a mechanic. It would dumb down the gameplay and you couldn’t tag a specific enemy amidst group of enemies.