Cloud's cross slash with paralyze is practically a delete button vs non-boss enemies, and his paralyze is super great to have on bosses. Vaan is capable of pulling out clutch BRV breaks along with a high level of damage thanks to his red spiral/white whorl. Laguna is supposed to be one of the best chars in the game later on after buffs but idk how he is now, haven't seen anyone play him yet. I'd prioritize leveling Cloud and Vaan at least for upcoming events and you might want to dump some levels into Yuna as well or have a few friends who have Yuna set as Esuna is sometimes indispensable for certain fights (morbols ugh).
XI Wiki


