I have to continue to give the game credit for facial expressions.
Accurate depiction of my feelings pre-Serious Ramuh Learning Attempts:
(stuff)
Except for the DPS check, Ramuh extreme is mostly on the Tanks and healers. Before the DPS check the Tanks merely swap after collecting orbs, with a party clean-up of orbs occurring between swaps, to keep those number of lightning attacks from going crazy high.
Before the dps check, the dps only have to watch out for a few things.
1: positioning, do not stand in water for a few moments after those lightning strike attacks, or you'll take large amounts of damage. Additionally, stay out of cleave range at all cost. Unless you have the Charge status on yourself, you're going to be one-shot by Ramuh's cleaves, no matter your HP or defense.
2: Getting in position to be shocked after being enchanted. Once you get that little target symbol onto you, run to the pre-agreed upon spot immediately and have somebody hit you with one of those lightning attacks. If you don't get this status taken off, you'll be one-shot moments later.
After the DPS check, things get a lot more crazy. Heck, to be honest I have a hard time keeping track of everything that's going on in this phase, it's one of the many instances in this game where I wish I could zoom out further.
The main change is that you'll see a tether form between two characters. If I remember correctly, with this tether in place, healers can't heal, and dps can't dps. When this goes up, one of the two people attached need to grab three orbs to break it, and there's nothing preventing two healers from getting tethered. Part of the reason this is so crazy, is that the proper response here becomes rather situational, you can't really go, "in all cases, do this, and you'll be fine." Usually Tanks get priority on orbs, sometimes a healer must grab them at all cost, (in which case the current MT may need to grab an Orb to get overcharged,) and during all of this, DPS and healers still need to intermittently clean up orbs to prevent too many lightning AoE's from dropping down.
Long story short, after that first DPS check, it's purely a matter of experience, and a teams capability to coordinate on the fly. It's a bit of a slog, but eventually people just get a feel for it.
So, basically, it just takes a lot of practice. Wish I had better advice, but tanks don't generally directly deal with those tethers all that often, and when we do it actually simplifies the fight some, since we can both break tethers and get the charge status simultaneously. Planning to take some people through that fight soon, so I should probably do some additional research I suppose. <_<;;