A scalable/vector based UI would be awesome! People (I among them) have been asking for it quite a while (since R5 at least) and it seems that Reason is finally moving into that direction via the REs and SDK (mandatory 3D/vector GUIs). That and the work done on iOS devices (touchy/feely and all that)... I bet the folks at PH are working on a smart and highly usable implementation of it already*
* Wishful thinking but hey... one can always dream.