The hardware acceleration, to me, sounds like the best addition. How many hours have been wasted due to clumsy manipulation because of the absence of decent OpenGL support? Too many.
I like the hardware acceleration a lot. I like how skin looks SO much better now. My next post should be a P6 render.
I do NOT like that it is actually a lot slower in a lot of things and the fact that they never really improved the Firefly engine. I still lock up rendering more than 3 people in a scene with any texture quality at all.
Not to mention I have over $12K in models that are now dated since V3 and M3 have been replaced / upgraded.