Part of the fun in low level content is trying to complete it with the toolkit you have at that level. You get to play differently than you do at cap. As someone with everything already leveled, it's refreshing.

There isn't any need to do synced content if one doesn't like it. You can do hunt trains for tomes and materia, and Frontlines, beast tribe quests or the highest level dungeon for xp. Roulettes are optional.