I don't understand this at all. Herc's buffs are 5/7 uptime. Are they down? Yes. But then it's quickly back to immortality land and she keeps healing up. No burst isn't really an issue, since anyone can get a Soul weapon in ~7 days with the help of their Union - and with it, Herc is rather fast. It takes ~30 days to get LMB version, which might get on the nerves of Union mates though.That's when you have the choice of applying your burst debuff. Vastly depends on content and team comp, though.Very true, but again, you'd need to know that this one turn will be a thing in this run. Reminder that you're going to be running non-Herc all the way until this very point - so your team's damage output is probably not going to be particularly impressive all the way up until this very moment where you need the spike damage. Are you going to reach the same moment with a very different team?
Again, technically, it's possible. But practically speaking, sounds very, very unlikely.
Or of course I could be all wrong about Solomon's damage output with the reset MEX.Oh, that's true. Fair enough.So, that's effectively double cap then. 1.4m. However, reaching 1.8m would require 5.8m pre-cap damage... that's not quite something you can do with the set-up you mentioned unless there's another ability cap increase in there.
However, 8 Def on Ult Disaster will help your damage output a lot. Not something I'd quote as a damage reference.Which are all vastly inferior. It's great if you're doing lesser content in which you virtually cannot wipe, but why risk it in anything else?