I won't go off on a tangent about how turning an RPG into a "MMO" RPG (4th edition D&D), or turning an RPG into a boardgame is lame.
But you have mentioned it; you obviously seem to believe this is what FFG are doing with 3rd edition.
Instead I'll just ask a simple question. Will this system be dynamic enough to allows players to play Chaos? Vampires? Half-Whatever-Quarter-Something-Messengers? A rock?
I’m not sure I would define a system as being dynamic by if it can support players being able to play the weird and the wonderful. I think a system that tries to make itself to universal will ultimately fail. Yes it needs to be flexible enough to allow for a great deal of different characters but I have found universal systems to be ultimately unsatisfying.
My group played a lot of Savage Worlds when it came out with the settings we normally played and initially had a great deal of fun, quick resolution and lots of roleplay. After a while though all the games began to feel very similar, we still play savage worlds if we play a D&D style fantasy adventure but we have gone back to original systems for the others.
But then I have never seen the attraction of playing a Vampire or Chaos or whatever in the Warhammer setting, its seems a bit like the trend that went through some of the AD&D groups when I was back at school, to play evil aligned character groups to “be cool”