Using the MPC inside Reason would be very cool, they support 3rd party plugins now ( RE ).
They have gui limitations though, all the new plugs have to fit into their rack format. But as you can control everthing from the MPC hardware that wouldn't be the obstacle.
A MPC Ren used with this new Reason Controller Keyboard would be a killer combo because you don't need to touch the mouse at all, not even for mixing!
http://www.youtube.com/watch?v=xtGhTVUZTT4Is there any info about the MPC Ren audio interface regarding its software?
A virtual patchbay/routing matrix and simultaneous WDM/Asio support would be nice, like the RME or cheap ESI cards can do. This way you can route anything into your preferred daw and sample whatever you want inside the computer.
Is there any info if the software will support UAD cards?