It has a certain "Do335" feel to it, though I imagine as a fighter, it would have suffered like the Pfiel...it looks to be better suited for flat-out speed...
That was it's intended role, but as we've seen with many of these projects, too many people start getting their ideas mixed in and pretty soon it becomes a dog and pony show.
There was consideration to adapt the R2Y as a high-altitude interceptor and as a light bomber and God only knows what else...
Yes I believe the next airframe was to mount two jets and get rid of the troublesome power plant arrangement. I have some pictures of it's ruins after the war.