I think it would be kind of neat if ALL of the summoner's actions had to be done through the pet. That makes sense to me. Trying to swap between spells I'm casting and spells my egi is casting makes me feel I'm playing two characters at once. I'll readily admit, in general, I need more practice in the ACN jobs.

Of course... I think it would have been more FF-ish if summoners actually summoned things for attacks. But I guess, graphics wise, that would be too much for the ps3 (or just about anyone)?