If you like the demon negotiation, FL, you might want to give the mainline SMT series a shot. It's a bit heavier in terms of plot and is not as character-focused, but there's always demon negotiation and I honestly always thought the way it's handled in Persona is pretty weak in comparison, I'm happy to see the negotiation system in P5 seems to be looking more in line with the main entries than the old Persona system.