Unpopular opinion: I love it when the party gets split up and you get to see party members you'd never imagine would ever team up.

I know a lot of people hate it when the party gets split up in a JRPG because they're usually forced to use underleveled characters and the game brings a huge difficulty spike due to this... but, I like it because of lore reasons. There's just something about two or more party members who have nothing in common and would never have met if it weren't for the world ending, teaming up to kick ass and forming new bonds along the way. And gameplay wise, it forces you to use new strategies you've never used before that you might end up liking and using from then on.