Unreal raids sounds like the best bet, particularly because of the format that they come out in allotments (which helps focus players onto one specific, makes the relearning and funneling aspects more likely to succeed).
Although I wonder if players were given the choice of a new hard content or a remixed old content which they'd prefer.
I thought the presentation of the first raids were neat, I like the idea of exploring (akin to dungeons I suppose). I'd never play it (not interested in playing so good that it feels like work lol - I like to use skills and stuff but if I turn and talk to my wife for half a second I don't want the entire dungeon to be ruined because it just caused 6 people to wipe, or alternatively and more likely someone else keeps ruining it all and the 1 hour I had available is largely wasted time (imo, I know some people enjoy banging their head against the wall, aspirational content as I see some people calling it now - Packetdancer I think started it lol)), but it was why I suggested ultimate 'raids' (zones), like coil and like most WoW raids (thinking more WoW, since you had branching paths/wings in that), might be something special for those hardcore players. Progression of areas adds a lot to the flow (and to watching them I think, rather than simply one boxed room over and over).
Of course since it was brought up, if it's new content or old but still has issues, I'd love for unsync (or a limited job designed to handle stuff solo) exists to the point I can do it later solo :p (many coils can be done solo, a few are a bit goofy though like handling the dragons).
