I believe they were intending to put level caps on stuff like Toto-rak in a dev comment around 1.19 (I actually thought they were going to be implementing it at that patch). I was hoping it would come sooner rather than later but I guess it would probably be coming with 2.0 along with level sync as I'm guessing the current coding can't handle level caps. It would be nice to see them added with a "grace period" of sorts so that they are doable when you enter but leveling up a few levels would make it easier (but not a complete massacre like bringing a group of 50s). Just like level grinding in a regular FF game