I'm not a fan of grinding for levels either, so I tried to reduce the grind with new items for more experience gain or level ups for characters below level 99, and other things like the automatic increase of character levels to a minimum level of 90 when you get to the time skip phase in the main story.
I tried to find a way to get the players to max level with content, so that they level while doing the dungeons and quests in the game, but especially after adding new classes with max level 200, this has become almost impossible to achieve.
I'll consider adding a cheat to increase levels, so that people who don't want to grind won't have to.