If it were just the puppet, sure, but with PUPs themselves getting their H2H bumped up along with much better gear and WS compared to their launch, they're still a factor alongside the Automaton. How close to two party members can the PUP and Auto get, with the mentioned quirk, before they're too much? As that's the issue your start facing when the AI isn't so much a series of choices to make and more like delayed commands.

Regardless, MP is not infinite inside or outside of Abyssea, despite an upped longevity in the former thanks to Atma and temps. Running out of MP just using Blizzard IV and V is not difficult, and it's not unheard of to go a stretch of time without temps if soloing. For more prolonged encounters with others, however, the enmity issue is still very real, even with Enmity Douse and its prohibitively long timer.

I know nobody likes nerfs, but it's something that bears consideration as the job tends to avoid a lot of scrutiny on its finer points due to past beliefs, status, and cost/difficulty in bringing up to speed.