I think it would be great to give customer's choices of different handsets. It has worked well for Rim and can work well for apple in the future. It really seems like they are listening to not only there customer base but potential customer's in the enterprise world.
I'm not a fan of iPhones - not due to BB bias since I played with an iPhone first before I ever thought about a BB - but this would be something pretty awesome if it came to be for real. And by real I mean in consumers' hands.