To be clear for me, for those who are saying this new system "cripples classes", what you are saying is that say a fighter can attack 3 times in a round with say power attack, and for example a Paladin must spend one action to activate Smite Evil and hence will only attack twice in that round? So the "crippling" is that you essentially can attack one less time per round when you wish to use some of your other powers? I am far from a rules expert but I have not seen anything that is prevented with these new rules, it seems like some things just no longer happen in a single round as they used to? And hence now are less fun?
I am genuinely interested in these responses as I am considering using this system with my players, but I don't want to make the game less fun for them.