A few notes:

While this post implies that Excenmille and Curilla do battle differently, I am quite frankly disappointed at how redundant their AIs are. In my first experience using them in a Trust Party together, it was a repeated occurrence that, after I engaged the monster, they would both use Sentinel, and subsequently cast Flash, simultaneously. Even when Sentinel was down, they would still often cast Flash at the same time, effectively wasting the MP of one of them. This is particularly disappointing, since if their tactics truly are one and the same, then Excenmille is almost always preferable over Curilla for his superior damage output. But, I like Curilla as a character more . . .

Also, there are myriad suggestions for Kupipi and, for the most part, I agree with them all, but in particular what I want to point out is the distinct lack of Haste. Keeping a whole 5-person band (myself, my Fellow, and three alter egos) Hasted by my lonesome is a particularly tricky and unfun task (particularly when I'm keeping most members Refreshed as well). Seeing as I didn't sign up for a return to the ToAU days when Red Mages were basically expected to do that, giving us more NPCs to cast Haste and ease that burden would be greatly appreciated.

In fact, you know what would be awesome? Having a Summoner NPC with enough innate skill for a activating a maximum-duration Hastega. I would use such an NPC pretty much forever.