Right now the best thing is to do a little of everything because of the Challenge Log.

Do some Leves until you hit the 2 weekly Challenge Log rewards for Leves. (Leve it to me & Make Like a Tree and Leve)

Do some Guildhest for Guildhest Challenge Log Rewards, but be sure to commendate someone after it ends so that you also get the Exercising the Right Challenge completed as well.

Fates have 2 different Challenge log rewards too. One is for doing fates in 5 different zones. I forget about that one.

there are challenge log rewards for using dungeon roulette so many times, and there's the hunting log too.