The perspective SE seems to be taking with FFXIV is to be a little more flexible with your jobs; your character isn't defined by your main. Maat was a job-specific fight that you had to do one time, so I don't see SE implementing him unless they made him the same fight for everyone, and even then, it would be impossible to balance it so each job could solo him. And what about DoL/DoH? Do they have their own Maat?

In terms of limit breaks in general... Does anyone remember them in FFXI back in the day when the level cap was 65/75 and it was rare to see a capped player? It was such a pain in the ass to get a group together. I remember running around Xarcabard with an alliance of level 55s and a few 70s trying to kill the NMs. I also remember running through Castle Oztroja and barely missing the torch to open the door. Shit like that just isn't fun anymore when it's every 5 levels, and with the casual nature of FFXIV, it would only be an inconvenience. There are people who still have to disband from FFXI parties because they don't have the 95 fight done, and it's annoying for everyone.

Instead of copying a tired and unwanted concept from a 10 year old game, I'd rather SE concentrate on giving us new content!