I think AI has actually been a good thing, especially since RPG AI is nowhere near as dead brain as say... an FPS or escort mission action game type.

What I like about it is that it truly places you in the role of a strategist and commander entrusting your own strategies into the hands of people who may not follow your carefully placed plans to the letter. It creates a level of risk that makes even random encounters fun. Sometimes, its nice to give away a little of the control, especially when you've played the genre for a number of years and everything becomes too easy when you take total control.

Even then, I feel most RPG AI has allowed me to actually have an excuse to utilize playstyles I may never have tried. I almost never use Status magic or Buffs in an RPG until XII... and Nocturne (which isn't an AI based game but oh well). But since then I've been replaying the older games and trying to utilize support magic more into my playstyle.