Well, IMO it would be nice if they also included a 3 axial compass and gyro, bigger battery, d-pad like thing in place of inverted T arrow keys layout (inverted T is designed with pointing, middle and ring fingers in mind, doesn't work very well for thumbs), better speakers, reliable data/charger port, IrDA functionality, among a few other things. But definetly not if it costs any of the functionality already present in the N900.