So here is a post of things I have noticed not working after playing around with 7th heaven.
Field models- objects try all available options none are working.
NPC- Biggs Wedge and Jessie several times I have tried to select the Jinkazama models but everytiime it just keeps using the PRP version of them. And with the base selection I try and use the Kaldarasha models again keep going to PRP variants of them.
Menus Avatars and Backgrounds: Vincents Avatars are using the standard one no matter what I select.
Field Models: Barret's field model keeps going Jinkazama one no matter what I select.
Battle Model Weapons: Slayersnext selection not working uses originals.
Gameplay Mods: New Threat Mod Crashes HARD.
Overhaul: Exceed 9999 battle damage crashes game.
That is it so far I will update further if I see anymore problems.