User blog comment:Pandawarrior/What if Luffy and the SHs had joined the Whitebeard Pirates?/@comment-3119203-20111201022439/@comment-3181121-20111201093123

That's why it's a what if scenario. Of course Luffy would never join, but for the sake of this question I just assumed he would.

Also Luffy would have finished Crocodile first before going with Ace, since he'd promised Vivi, that's why I included Robin. Brook and Franky are obviously nonos.