Hmm, I was thinking about my Kogasa tank idea abusing Instant Attackers again today at work. Chen... initially I mostly ruled her out compared to Momiji and Mystia, but she's actually better suited than I thought. One of the weaknesses of the strat is you burn through the instant attacker's mp very quickly; although that's fine since kogasa can speedily swap them (And possibly herself) out to restore MP and overall, you're still getting just as much damage as you would from burning that mp at normal speed- just way faster. (This is also a good reason to run all 3 instant attackers if you can spare the space)
But, Chen can use her self-debuffs synergy with Hexer Conversion to fix up the mp thing, suddenly a more notable build with Kogasa fastswap tank. As well, she's fast enough to potentially cast Idaten AND then Phoenix Spread Wings inbetween Kogasa's turns, which deals with her lower damage potential compared to Mystia/Momiji (esp. post awakening), especially as Phoenix Spread Wings has a nice formula. (And she can easily fit in kimontonkou instead of idaten, or double idaten if elements warrant it, etc) This also lets her still use her awakening skill some for ATK up. So, suddenly that looks pretty good; she can keep going and going where the strat will burn up Momi and Mystia's mp fast unless you're like, Magician Mystia with Ill-Starred Dive for max mp longevity (which isn't the worst idea in this build, either- occasional chorus master for SIL when possible)
Her base atk is absolutely garbage but it's much easier to patch that up in postgame, and easier to use her cheap library when she'd literally only care about ATK and a minor spd investment. Still really bothered by good def enemies, but super drill will exist.
It also makes Mystia's party-mp-on-concentrate somewhat better because with 900 delay it's not entirely pointless. Giving them some mp recovery boosts and just concentrating with Kogasa's fast turns to deal with mp isn't such a bad idea either, as they'd still get more attack turns than most other attackers would, but... hrm. And huh, Swordmaster Momiji using the mp recovery attack... (as post-awakening Momiji is perfect for that sub as it is)
and so I sit here and tweak my future party design as I wait for 3peso to finish it. Fitting in Kogasa/Momiji/Mystia was surprisingly non-difficult, but swapping a spot for Chen too might take a tougher decision >.> Currently looking at a final goal party of...
Renko/Byakuren/Kogasa support core (all of which regen hp and provide buffage after kogasa eventually has dragon god sub- I might not be using her until then anyway??? kogasa regen should be A+ with renko's potential hp and might encourage hp byakuren build depending on how stuff scales postgame, I'd have to see)
Meiling/Futo big damage reduction bulky attackers (mountain breaker is sooo goood and meiling's soooo durable)
Miko/Nitori maintenance bulky attackers (and miko can eventually clear off boss buffs! Yay! also eventually increases everyone's buffs even in the backline!)
Maribel/Rumia damage/support hybrids that also cover my healing (Rumia's bulk is actually not half bad, either, and Maribel should -rock- after awakening- plus vision sharing! MOAR BUFFS FOR ALL)
Momiji/Mystia instant attackers for Kogasa to megaswap
Hina for debuffs. (After awakening she might be pretty good as an attacker hybrid? I'd see about that later. I DO have Hina+Momi+Nitori for awakening synergy team...) Futo+Rumia could also both deal all status effects.
I guess if it worked out well enough I'd drop one of the bulky attackers for Chen- unless Rumia and Miko's awakening debuffs were accurate enough to replace hina, dooooubt it though, more like just make it easier to run Hina as a hybrid offense. RIGHT NOW, my party is that, except Kogasa is Rinnosuke tank, and Futo/Miko/Momi/Mystia are instead Kaguya/Eirin/Yuyuko/Iku (who I've been swapping between iku/shikieiki sometimes). Eirin's overheal is REALLY good, I'll see how I feel about it postgame, but I'm okay with losing the defense ignorers (I can swap them in with glass cannon only investment levels for relevant bosses postgame) and Yuyuko's painful library cost, level rate, and lack of damage boost passives actually makes her a -lot- less useful in bosses than I expected from her great stats and useful moves.
If I have to I'll swap Rumia for Reimu :C But I don't wanna. I think I won't need to?? And until I start using the Kogasa combo I'd just keep on with Rinno/Eirin/Iku prolly. Iku gets a lot nicer in plus, huge speed increase, counter works now... if I don't like it I'll swap back to Shikieiki again :V Kaguya now that gambler is nerfed is sad and it's hard to make her fast enough to ever use in randoms :T And dropping Rinno for Kogasa will make it really hard to use her in bosses either.
Technically Kogasa means amazing potential for Satori/Reisen combo but I'd have to make some painful character tossouts so if anything, it would be a gimmick I'd swap in on certain bosses as satori/reisen would ONLY need some hp investment. ezpz. (But satori would need awakening so that'd be a seriously lategame thing if it's only for sometimes... it's something I'd do on dumb corridor bosses??)