I've done just that and now I've finished the rest of the available content.
The overworld gimmicks are nice at mixing up the round pacing, but they still don't do all that much for the variety of battles themselves. Almost nothing in this game forces you to change your strategy in any way. What does is the little alternate team sequence. However, that one drags on a bit and it's alienating to use different characters for so long when you've been leveling the same ones since the beginning.
I got a glitch at some point in combat where the combat text to the left turned "null". The game froze and then closed itself before I could screenshot it.
Overall I love this game for the lore and the aesthetics, but it does often feel like that's a carrot on a stick, with the battles getting in the way. I'm looking forward to playing the rest of it when it's done.