Speaking of Act 3, I really do love that Act 3 is literally just for side content and that's it. I'm glad there's so much shit to do when the game finally opens up and the damage cap remover is effectively free. Some of these bosses have a ridiculous amount of health though and I guess from here on the name of the game is pumping Verso, Lune, and Maelle with so many damage pictos that they're shitting out hundreds of thousands of damage a hi
True.
Flying around and finding hidden bosses is fun. And some of the side content is just too good, like a damn casino in the skies.

And as for damage, I'm still trying to break 1mil. I'm close (700k), but not there yet.
Speaking of damage. What do you guys run? I use maelle, sciel, lune. Stuffed them with energized start. Maelle starts with the AOE defenseless attack, lune follows with Hel (I have the -1 fire AP weapon and enough energizers to start her at 8 AP) then sciel does the fire bond spell (hit all burning enemies). For basic enemies that wipes them before they have a turn.
For bosses I don't really anything special. Maelle goes to virtuose stand off of hitting a fire target and spam fleuret flurry to keep pumping out virtuose damage.
Lune does thermal transfer into lightning into genesis.
sciel marks targets for maelle or just spams her high power spells as well.
I run Lune, Verso and Sciel.
Verso has Dualiso, which makes you take another turn after a Basic Attack. You can add +1 AP, Defenseless, Powerless and all kinds of shit on a Basic Attack. Even if the scaling is absolute crap, that weapon's mechanic is simply unmatched.
Lune has Kralim, which starts her with 2 random stains. Depending on what stains I got, I use Wildfire, Storm or Tremor, anything that gives Light + Element stain. This usually brings me into Genesis. I may opt for Lighting Dance for insane single target damage (she has over 70% crit) or Crustal Crush for incredible Break damage. If the fight drags on, Lune's 3rd Gradient, has so much damage, it's disgusting.
Sciel is there to give Heal and Heal On effects and maybe give other members Double Damage and to set her Twilight damage. Final Path and Twilight Dance can do lots of damage and her Gradient attacks are one of the best.
I use lots of +AP pictos and Lumina, and Verso feeds even more AP with Leadership skill, so I usually am able to spam 9p skills every turn.
Anyway, if you're interested, here's how a fight usually goes for me.