I know Blizzard has (had?) a tradition of not releasing something they think it's not up to their standards but how long it takes to recognize a feature is bad? Team Deathmatch been promissed for ages and whoever played said it was fun.
Now it is boring and uninteresting after a few matches? And took 6 months to realise it? C'mon, something here doesn't match. Also, reading the post it really sounds like they are now focusing in trying to make some kind of DOTA-Diablo hybrid...
Still, I'd be lying if I'd say I was disappointed. Any old wound is long healed and what is left is a numb scar where instead lived any passion about the franchise.