Well, if you'd ever decide to return to these, here's something I noted:
Bucking Jacko - Bucking Bronco (obviously)
Shock Dashie - Shock Jockey (well, DUH!)
Confession - Possession (another DUH!)
Twikinesis - Undertow (the way I described it, at least)
FlutteRAGE - Charge (half-obvious)
Flugelhorn - Devil's Kiss (once again, mainly based on my interpretation)
So, there's no pony equivalent of the Return to Sender and Murder of Crows vigors yet. I would suggest the former to be based on Trixie and the latter on Gilda, but it's your choice. I'll check out your gallery some time later.