Quote Originally Posted by DurtiMonkeyToe View Post
Then it seems like it could be exploitable. There would no longer be incentive to go level my 45 lancer on appropriate mobs when I could just sit in a dungeon that caps my level and gives me the same SP.
It was exploitable in FF11, yes, with Astral burns and what not.

It depends if it's an exploit or not if the relative difficulty of doing the dungeon is easier than grinding at your actual level. If there is a glaring disparity, then yeah, it's an exploit, but there can be countermeasures in place to avoid that as well as game balance adjustments.

But seeing as how dungeon content is supposed to be harder than normal grinding, I don't see how it's much of an exploit.