This is quite an interesting idea. Though I don't know if Soaren would go for a mare like that. I do like the wonder bolts but I feel like they think their just a bit above everypony else in one way or another. Not all of them of course, but I just feel that Soaren would go after a beautiful pony or a fast pony.
Derpy is not very fast and to most she is not the most beautiful either. But she is awesome!