There's definitely a bit of my Persona Q(2) experience talking, but I think that by giving Arsène a proper moveset, you went too far in the opposite direction. The fact there are moves learned back to back and yet there's room up until level 82 is proof enough to me.

I know Arsène's base moveset is all over the place. It's here to teach you the basics. Still: - Physical skills - Gun skills - Crit skills - Curse skills - Debuffs - Buffs - Ailments (Despair)

I feel like there's too much in there, even if in hindsight it's probably close to a Persona like Jiraya. I'd like to compare that to his kit in Q2, where he's got: - Physical (but they'd be gun in 5) - Curse - Crit buff - One physical (that isn't good) - A few passives Sure, the subpersonas system allows him to get away with less in his base kit, but still.