Did you ever try Somnium AI? Made by the same guy and has similar elements, while being a completely different game. I'm in the same boat as you with almost no games scratching my ZE itch, but AI def did it.
Unfortunately no the AI actually mainly functions through cheating. Though if I want to get my ass whooped I'll just boot up HoMM 5.5 cuz that AI is very good.
only ps5 updated to latest firmware can go on psn, jailbroken ones just don't use psn or they risk getting flagged or banned, altho spouting profanity in online play alredy does that