There's a deal right now on Humble Bundle where if you donate 1$, you get 500 amazon coins (5$ value), which can be used to buy lapis in FFBE (if you use the amazon app to play). Can only do it once, but it's a decent deal, so figured I'd mention it, sale ends in 3 days.
Vargas's exclusive buffs aren't very impressive, which is a shame. Original Maxwell trial with the old rewards is being re-released, but we're also getting a new, updated harder Maxwell trial with new rewards also, so that's nice. Considering how easy it is these days to get high holy resistance, I'm sure it's going to be a joke, but we'll see.
Elza's enhancements make her madness rush deal 800% damage with -50% darkness imperil and limit gauge buff, but it's still a barrage style move, so no chaining allowed. Unsure if worth it or not, but I don't have her anyway, so that's for others to decide. Her breaks go to 60% enhanced for 3 turns, which is really strong, but Delita still has the best (65% for 5 turns).