The level cap quest system needs to be changed badly, it made sense back in the day but leveling now is so fast that it is just annoying to have to stop every 5 few levels.

How it currently works:

Be level 50 > do Limit Break 1 to unlock 55.
Be level 51 > do limit break 2 to unlock 60.
Be level 56 > do limit break 3 to unlock 65.
Be level 61 > do limit break 4 to unlock 70.
On and on and on all the way to 99, this is so tedious.

Instead it should be:

Be level 50 > do Limit Break 1.
Finished limit break 1 > do limit break 2.
Finished limit break 2 > do limit break 3.

Put a level restriction on the first and then the only restriction from there on should be completion of the last quest, then you can do a lot of limit break quests at once and just level at the end free from interruptions.