(Trying to dig this up but going off memory here)
When Cait Sith was finally released like several years too late, what we got was a level 75 fight and a summon with BPs that only went up to level 75 despite the fact that she is connected to an expansion that saw the rise of the level cap to 99. It was stated around the time of her release that they would later add BPs that go up to level 99, but this never happened.

So, being that guy for a moment: Is this ever going to happen, and if so when? About the only thing she does that's special in any way is be able to bestow reraise on others and raise people regardless of subjob.


(I'd even go so far as to argue that the summon quest itself was actually already ready by the end of WOTG and that for whatever reason they just decided to sit on Cait Sith for a while and then forgot about her entirely)