So which location do you wanna see next after Thriller Bark has ended for the next arc? I don't mind either to be honest since they are both cool. XD
Since its almost a given that the next arc after Thriller Bark will probably be in one of those two locations.
They are the only two real outcomes for the next arc imo, the first one being that the crew loses to Kuma and Kuma captures Luffy and probably takes him to Impel Down.
Where Luffy probably learns whether Ace is dead or alive and tries to rescue his bro - assuming Ace is alive after his fight with Blackbeard of course - in a jailbreak type of arc.
The second scenario is that the crew again loses to Kuma, but this time they flee to Fishman Island and encounter Jimbei at long last. Jimbei by the way was mentioned all the way back during the Arlong arc by Johnny and Yosaku. Also who knows, we may even see Arlong again in the Fishman Island arc.
I honestly can't see the crew beating Kuma since like I said most of them are exhausted and tired after the battles with Oz and Moria.