Yeah, it's called "to reface."
Did you mean "refarce"?
Actualy some live users prefer the small keys, especialy in today's live electronic dance music scene, where they have myriads of small desktop units that they tweak away on... I can see the point of having small keyboards in that situation.
Personaly I'm not into small keys... not that I've got big fingers, but I prefer full-sized keys... but with that said, I'm very much interrested in the new Yamaha Reface DX... mainly because it's a modern FM synth without the noise and aliasing of the old ones, plus it has built in effects so that you can tailor FX to a preset... on top, it has some unique features that no other FM synth has... it has feedback on all four operators which is a great plus.
I might actualy get one, even if it has keys, simply because it is so small it will not clutter up my workspace that much... though I wish they had made tham with add-on keys like the new Roland Boutique synths.
Other than that, I'm still waiting for DSI's next module or rack synth... and also I'm waiting for a Sub37 rack... hope it'll be reality some day.