I think it will be great to see what they come up with, with Forza 4. So far, the series has been steadily improving with every new games. They do approach the quality of GT games, that's for sure (and for many people here, it even surpasses them). I do like the Kinect features they have planned for the game. But they're pretty much nothing but superficial elements (I'm talking about the looking around the car stuff), and as such they could get old quite fast. And I'm certainly not interested in driving using Kinect.
If they improve the physics, make the game look more lifelike (I think the games have an arcade racer look), put more cars in there and maybe even some nice car nuts centric features similar to the Museum in GT5, and most importantly, have the G27 be compatible with it (do something, anything, about that dammit!!), then I would certainly consider buying it.
