I've had no EXP problems, personally. I'm at 89 just finishing the level 87 quests, and all I've done was a half-level from WT at 81, a few early FATEs in the first zone, and MSQ quests/MSQ dungeons. No roulettes, all sidequests and FATEs after the first few funneled to SMN (which is now 3/4 of the way to 85), and the only dungeon I repeated was the first one to help a friend, which I did on SMN. Definitely doesn't feel like issues to me. o.o