I have to say I am very dissillusioned with Marvel at the moment for the way they are treating the Hulk character, it actually disgusts me the way they have dealt with all this and with Hulk being by far my main draw to this Avengers movie, it has effected my excitement for it a lot, to the point that I genuinly may not go and see it if any more **** goes on.
However, non of this is Ruffalo's fault and never will be, I really hope he'll do a good and am pretty sure he will. The only thing that pisses me off is its just going to ruin the continuity of it all, when I see Ruffalo as Banner, I will only think of him as a replacement for Norton, much the same way I did with Cheadle in IM2, I just couldnt get into the character as the same person, and this will really effect my enjoyment of Avengers too.
But good luck to Ruffalo, I hope he gets some good things to do isnt just there to make up the numbers.