I found when I got to the first or second month of Aigis and entered the Desert Arc I was asking which missions should I be doing now for the best way to level my units as I didn't care about leveling my lvl as fast as possible but could never find a good answer if I should be doing desert arc missions or the ones I keep seeing mentioned like in the FAQ above (Deep Forest Road, Tower Overwatch or Dragon Hunting).

Over time I found myself farming Fiery Oasis as it offered high lvl units and on average 2 bonze units, only to confirm later with others that it is one of the better maps to farm once you 3* it for sortie. Then I heard BS II is the next best one to farm. Would that be worth mentioning in the FAQ above under farming?