Oh right, one more thing I wanted to mention, since I saw people talking about it earlier. The Peach:
View attachment 1850996
It's pretty good. But you only get a couple of them, so it's not like you could put it on everyone anyway. Honestly the best part about it is the innate vault range. For comparison here are the other super rare accessories:
View attachment 1850999
Basically it's a better Sphere/Cube, but sidegrade to other options. I personally prefer the Flame for the raw Atk, and Rabbit for crit, but too bad you can't farm more rabbits AFAIK. The Lotus is also my go-to dumping ground for Exp/Drop boosts and the flight marker, so I'm not particularly starved for peaches.
The bigger issue is if you already have one carried over from the JP version. If you simply "obtain" one at the end of a stage in the EN game, nothing really happens (you don't really get it, and possibly other drops either). But if one is in your inventory when you load in, everything "after" it
will be deleted (and then autosaved),
which includes characters. This effectively locks you out from doing anything, because any stage you start will immediately result in a game over since your roster's empty. I suspect it has to do with unescaped characters in the name (eg. "Peach);") which horribly breaks everything.
If you do have a JP save, you can make it EN-ready by launching the JP version and selling any peaches in your inventory. Nothing can be done after everything's ruined, though. You'd have to go get another save or start over in that case. I'm assuming the fan translation works the same as JP for this purpose.