All required and optional content (barring bloodstained seals, naturally) done up to the Eientei fight.
So, I've learned two new things about this game this run, since I've been using the wiki.
1. I had no idea that the Disgusting Malice fight existed.
2. I now know why I could never get Reisen's Getitup V drop before.
Getting Reisen's drop was surprisingly difficult since the fight is normally so trivial. If I didn't get lucky with paralysis, my entire team could repeatedly get mana drained.
Suwako ended up being much more difficult than I remember. I decided it wasn't worth it and just came back 5 or so levels later.
The same thing, but for Nitori. Getting Tenshi into a good spot to take megawatts was key. Thankfully she's weak to fire, which I have *plenty* of.
The 10F-12F were fairly par for the course, although I got severe pangs of homesickness for better days with good old Chen, who could outspeed the Demon-Faced Tops. I'm sorry, Aya, you're just not good enough...
If, when looking at my team, you thought "I bet the Tenshi fight will be trivial," you'd be right! Her actions were: Sword of Rapture (killing Aya), Focus, Focus, dead. It was actually a fairly long fight, but Mystia remains as pro as ever, keeping her paralyzed and poisoned.
Sometime during the giant maze, I went back and took out Sanae's Foe, which, surprisingly, activates immediately in NG+ instead of waiting for you to pseudo-recruit 20 actual characters.
I can confirm that the NG+ BP save in the thread OP does not have enough BP for Youmu's Yuyuko event. However, I can also confirm that she is at most 24 BP away, which is exactly the amount you'll get if you fight with her in your front line until she goes home (her base TP is 12), so it's a fairly simple endeavor.
So now I'm at Eientei. Looking at the Battle Data, it looks like there isn't actually much danger to killing Reisen? Kaguya's and Eirin's berserk states are tied to each other, and Reisen's is tied to Eirin's, so it seems like the character I've always killed last before should in fact be the one I kill first...?
Kaguya (mine) finally has enough SP to cast Hourai Barrage twice, but she still has no legitimate targets for Buddha's Stone Bowl. I guess I'm just waiting for Shikieiki to have enough SP to cast Last Judgment twice in a row. Mystia is still the queen of trash battles, and Yuyuko and Utsuho remain...useless for now. :/