WGT, just look at the number of complaints in the forums related to H2H coin-room matches and showdowns using the same formula.
It's time to reconsider their usefulness and even raison d'être, especially when you clearly have no intention of refining or fixing them. I really believe they're ruining the game.
As for showdowns, they don't have to be H2H competitions, as has been suggested countless times by a friend of mine who was recently suspended.