Before the advent of moria I would have thought a luffy gear 3 fight with jimbei a possibility thinking that oda would use the fight as a tool to show off gear 3.
But I suspect that the moria fight will instead be a small side arc to impress people with luffy's gear3 storm or something like that.
This is a semi side note, but how many more people do we need to see luffy jet pistol rape(I chose jet pistol rape for the way it sounded. Please sub in any move you like for the sentance) before this fan community is going to believe luffy is on shikibukai or close lvl?
One piece is clearly a powerup manga. Not on the old dbz scale but luffy gets new moves, gets physically stronger for sure and he has gotten his new forms.
Luffy beating practically any shikibukai should be possible now. Not a OHKO perhaps because ohko fights are for unimportant enemies but a fight luffy struggles to win can be easily expected.