Right now, no. But it's as Zero said. Plus, buying stat tomes is very effective. HP boost and atk/mag boosts make a significant difference (as HP boost grants 20 per level instead of 10), as does resistance/evasion/affinity/accuracy boosts; many later enemies have non-zero evasion, as far as I can tell, but Accuracy boost mostly nulls it out.
Most importantly, awakenings are very very good so you should probably do a little bit here and there to at least pick up the better ones for your team. If you take along some encounter rate reductions (rumia or renko subclassed as diva is sufficient) you'll almost never have to fight outside of your own terms making it a vastly smoother experience, and you can just do a small handful of floors until you're bored and leave. Although, it's a good idea to go for ~20 if it's not too boring, so you can pick up Quartz Charms from the shop, because it seems that endgame meta (past lv1000) is -everyone- should be equipping one since library stats start overtaking equipment bonuses. If you want to streak 20 floors just save infinity keys for !!!!~!!!!! chests and don't spend amulets on !~!! chests.
Also, if there's ever a second email sent to 3peso, I collected my concerns into a concise list.
-Bug:"Four Humors Possession" - Pathos' SIL effect is unusually small.
-Buff Ninja subclass; it's conditional effects are small considering Transcendant's always-active effects
-If realistic, throttle effect of high Speed stat.
-Revised Extra Attack has very poor interaction with Private Square.
-Komachi's HP is not special in endgame and awakening is poor; it should buff her unique counterattack. Defense piercing?
-Wriggle should increase PSN damage to foes when in front; there is little reason to keep her out
-Nitori's attack stat is ridiculous even without awakening. Either remove her Overheat, or nerf Maintennance to 50% bonus while leaving Miko's version alone.
-Some endgame bosses have too little HP, such as ***Winner*** and late infinite corridor bosses.
Kokoro is difficult to use.
-Buffing boss attack/magic is very bad; not worth offensive Kokoro
-Tank is possible, but performance is limited and forced to subclass Healer?
-Poor performance in random battles without a preemptive Mask effect
Possible suggestions
-Buff passive skills for reducing debuffs on allies, to also reduce buffs on foes?
-Skill to erase emotion mask for small team heal and large buff/debuff effect?
-Awakening passive skill to start battle with an emotion mask active?