What if Vivi and her pet duck had kept on sailing with the SH's?
how would she improve as a person and as a fighter?
I for one, loved Carue, and i would love for him to have stayed, he could become the "cavalary" of the crew, he probably wouldn't have many fights himself but would work well as a support, carryiong people and messages around.
Vivi is harder to tell, its obvious she would never become a great fighter, although her weapon is… unusual...
i looked for a similar thread and didnt find one, sorry if this has been done, but we can always imagine how skypea, W7/Enies Lobbies and thriller bark would have been with those two