Although, possibly, giving the middle evo a small neck, or possibly a hint of electricity on it's legs, wouldn't hurt.
Because now, it looks kind of Baby Sheep --> Slightly draconian sheep --> Complete Dragon
Yes, there are many prevos for the previous CAPs. Eric the espeon has a PR ready about the implementation of these into LC, but I'm not sure about the progress of it. The users on the server have a side project regarding them as well.
I support this evo line, if it has not already been chosen.
Also, I believe Syclant also has a prevo line. Someone should be doing a thread in Smeargle's studio with the prevos, but I don't remember his/her identity. As for prevo names, if we ever get around to little cup we should figure them out at that point.
I've been watching your every move since this CAP began to examine the structure of things around here. I think the turnout for this particular one has been absolutely amazing, from the Electric/Dragon typing to the awesome art submissions. Now I guess I'll become an active part of this community for CAP 9.
Oh, wait, now we have to do playtesting, right? Fantastic absolutely.