Your though about the matchups?
I honestly dont know whether the F6 would be wiped out early or not, but my predictions are generally the same with everyone else's. I do have some other possible matchups. F6 could act as warm-ups, plus reducing the enemy's force (except for Drake).
-Zoro vs WW (good warm up b4 facing King)
-Sanji vs P1 (with Ulti interferring)
Sanji's one is tricky since I know some wouldnt like it if Sanji has a rematch with P1. Thats why I think Sanji vs Drake is possible as well, but the clash wouldn't last long. Maybe Drake would tell Sanji that he has his own agenda, resulting in a halt. Sanji vs Queen would be the real deal.
-Jinbe vs Sasaki
-Black Maria vs The Girls, but it could also be 2 vs 2 with Ulti.
-Drake could clash briefly with other SN like Law/Killer
-one of them could also be a hypetool for Kid to show his strength, would be interesting as well.
-as for Franky, Brook, Usopp, Chopper, I dont see them clashing with the F6, maybe act as assists (?). I'm more into the idea of them vs Numbers.
I wanna hear your predictions on these as well!