Its wrong !
They suppress le possibility to crawl faster, they suppress the total freelook to the dirigeable look(less réalistic, like BF2 with the possibility to look on you W/L, wow impressive), they add flat and little maps, they kept the same physic motor and the engine is not more optimisated than Ofp.
So i stop here, the list is too long. I think ArmA 'll be for a large audience, so, it 'll loose all that make Ofp a great game. What a pity...
What about the seagull ?