I've seen people post her doing damage in 1000s (something like 4800x3), that's pretty crazy.
Still Not as utterly Broken as Relic (Aisha LVL 10 with Relic+ All skills) will consistently Do:
3000+ Damage every turn (Only not doing it when she misses or against Luxatep*)
3000+ Healing
Spell Slot Recharge
Random Stat Buff
While less Raw DPS... You really don't care for that loss when Nuan, Sable and Annie can murder most things with the turn and stat boosts.
*Not sure on that one... may have been her just jobbing and missing and I had nuan instab-gib Luxatep the following turn so (Can't really tell now)...
Also... A neat thing I did really like is that the final Boss rush has some unique dialogue from the old bosses, An example is brainwashed Annie, whom will straightup call out about how she "Was stronger! Back then" and "the greatest bandit"... Also interesting is that Marisa will say how cruel it is she is fighting against a unwinnable (from her perspective) battle that matches that of her bad end. Lust also gets similar treatment (where after the battle she straightup says the Party put up even more of a fight than her sisters)
You also can get fights you originally missed for story details (If you Cocked up and accidentallied yourself out of freeing the Knightess*, you will actually unlock her info/battle here. She is hardly all that tough a battle but is a neat thing if you missed her)
*Whom may or may not be Lilliana's father (Would explain the fixation on Royal Pussy... and how she calls out if you face her in the Demonic Pact ending that she was there and watched Lilliana grow from service to the castle... and the tidbit about how Lilliana was conceived in the Phantom Express)
Finally On an unrelated note. Regarding Flirting and such, on top of obedience flirt being a basically Must do for all characters (Except Sable, Sinian and Commoner*) additional "Good" options to flirt with are Mesmerized (Which will boost Affection in basically ALL cases ive found), Ignition (Which from what Ive tested will give a near universal Boost), Arouse+ Horny (Both are good though Horny is better in how much it gives from what Ive found) and in specific cases** Pregnancy is also a good one to flirt on.
Finally Bimbo is also a potentially good one (I began testing before remembering I sold most my Magic Hairdye to instashift and not caring enough after that point to use the forsaken tower transform trap or the vivid lipstick to force it)
*Their affection is high enough that it straightup has no effect.
** Ive found this works on Sinian and gives a HUGE boost... it depends on the char though (Samona and Yterre hate it though so lose affection... Try it out yourself for other chars)