That would be awesome, but the truth is it wont happen. The people that want it don't have the money to make it, and the people that have the money to make it don't want it. Simple yet complicated. The only way i could possibly see this working out, is if a bunch of people got together and figured out a way to with with the official software of the PSP, and figured out a way to hook the keyboard up to the PSP.
I hate to always be the rain for your guys' parade, but most of these will likely never happen. You guys are forgetting this is a portable unit, and nothing more. Think about how long the DS has been around, and they still don't have anything as advanced as we do. We've made a lot of progress with the PSP, however, i can't honestly see it going any further without sony finding a way to make cfw illegal.