Really? I was thinking the opposite because Gotenks floats and rarely gets to do his 11 ki super on this team. Whereas Omega typically floats but I find Extreme has more flexibility in terms of rotations so I sometimes keep Omega in the main one. I'm not disagreeing necessarily, I'm just curious as to the reasoning. I haven't used either card that much, personally, aside from borrowing Omega friends for his own and Broly's dokkanfests.
As for Vegeta, I only did him once and it was with mono INT... with LR Gohan lol so that is no help. But I've heard mono AGI is good, Super and Extreme probably work too.