They have already fragmented the type B model with releasing 256MB and later 512MB versions.

They should just release an type C model with faster CPU and GPU. The type B model is too slow for some "Full HD" resolution computation of the official Rpi-Cam as well it is too slow for most Linux distributions (even basic web browsing).

A ARM board version similar to Intel's first generation ATOM 320 (1.6 GHz dual core with HT) would be fine for "type C".