No one knows exactly how Alexander will be.

I personally would prefer endgame raids to be more like WoWs (and I only mean that in the sense that the raid is a single instance, aka world of darkness except bigger, instead of being 4 bosses in 4 different "turns")

I'd rather we have a raid, named Alexander, or Coil, and it's a large single instance, with many different bosses.
If you go in, clear the trash and the first boss it will save your progress, if you re-enter, everything you killed is still dead. It would reset weekly like normal.

I'd much prefer that over clearing T1, then T2, etc. The way it is now, even with the cutscenes (I REALLY love how there's cutscenes in the raid) but the fact that the "raid" is 4 different instances, really breaks the immersion and some of the progression even, for me personally.
It just kind of breaks me off from the story when the end game raid isn't "really" a single place. While technically it is though. It just doesn't feel like it almost, imo.

But even so, with the way this game is designed, with every zone not being a seamless transition, and instead everything is locked behind loading screens, I'm not sure, athough considering LOTA, ST, and WoD proove it could work I feel like.

Even so, I really enjoyed Coil, even if I still have to clear 12 and 13, and if they stick to the same formula of "turns", I'll be ok with it.