Maybe it’s an AU situation, where Regina never cast the Curse? Maybe Rumple wasn’t even as manipulative to get the Curse cast?
If Regina either wasn’t as evil, or had been imprisoned or killed, then she never would have locked up Belle, which could explain her being there.
Bae never came to our world, instead he went back to FTL and grew up, which means Rumple had no need for the Curse to be cast.
Hook came back from NL, maybe not still hell bent on killing Rumple, considering he’s hanging out with the rest and Belle looks happy, so Rumple’s probably not dead. Maybe his time with Bae affected him in a way that he ended up coming back to FTL to genuinely make up with him.
Snow’s cape seems like it’s probably there to hide her bump, but maybe not, and maybe she’s still pregnant with Emma here.