Hey, just asking why people keep suggesting other gaming systems to run something like this. Amber is nice game, but quite different universe, so is Exalted. If you want to run cosmic change game in D&D universe you use D&D universe, right?
Systemwise I agree D&D is not optimal, but I always wind up using it because D&D universe has more inspiration for plots. Seriously Amber is pretty one trick pony, D&D universe is summed up by multiple people's imaginations and writers story not just based on books of fiction.
And it's not even such a great system. I've played lot of Amber and Exalted for the matter and they run different themes. And Planascape IMO was originally created to be planar adventures for more regular if more cororful D&D parties, they could start lv 1, after all. Personally even if there is merit of great ideas regarding Planescape, they are far from original concept of planes for say, World of Greyhawk, and thus for me work better if looked at as different entity.
That kinda epic cosmic plays are not unplayable or not fun, they can be awasome. Yes many people don't like that kinda roleplaying, and they won't even get it. It kinda plays like thinking people's superhero game. Some like those games with big numbers, millions and billions, little like final fantasy damage numbers, and really long final fights. Some do it system light.
Best part of epic games is that world itself evolves and changes around pc:s because of players and plots of DM. And social roleplaying with greater powers offers really interesting role-playing opportunities. And it can be much more different than some familiar greek mythos god-thing.
If people want to look for inspiration Sepulchrave II's long and philosophically heavy story hour and another IMO great writer Shemeska has fun storyhour too, but if you want take look at evil power social life he has created quite a few stories about his npc:s. His game is not as epic as that another one, but his cosmos sure is.
It does need dm. And dm should be main storyteller. At least for me. Some might have learned different ways to play but I am old-fashioned like that. Problem with those games is that people really have to be in same "map" on what they all want from game. And trust issues are really bad, they kill those kinda games. Not far out plots or characters.
There is one more issue that might be affecting dm, I am well aware of that, because it's my groups most typical issue. It's boring for dm to loose all the time. And play those whiny worshipful drooling drones of mortals. It gets old.. fast. This is one reason why it would maybe be best to play no-challenge phase fast and mostly do it by sharing stories. And then skip to phase where you actually start challenging powers that can fight back.
You are basicly asking him play your characters victims for extended time. Some people can handle that. Most think it sucks and they want it to be more complex.
If you don't have trust issues best cure for this is let dm play DMPC who can win, while his npc:s loose. Works for our group when game gets it's walk-over everyhing moments.