What did Yoshi mean when he said that the combat system will change in 4.0

[Blueyes]

Bit disappointed that none of their changes so far appear to be doing anything to address hotbar bloat. I know people look upon WoW's massive class prune as a deterioration of class identity, but I feel like with all the cross-class skill nonsense and 5 extra abilities in HW, that the space for buttons right now is just "too $&@%ed high!".

I thought this was a bit ironic. At one point during the fan fest it looked like he was going to talk about addressing hotbar bloat, but then he goes and says, "we're going to take those useless actions that people don't put on their hotbar and make them useful" which... just adds to the bloat.