Hey, everyone. First time poster here. I've been into Planescape since I played Torment (still my favorite CRPG of all time), and it's still my favorite setting of them all.
Anyway, I haven't gotten to play Planescape games nearly as much as I would have liked, but one thing that always got me, was that Planescape seemed to have a sort of dynamic and feel that didn't fit into Dungeons and Dragons rules that well. Crazy, I know.
This perspective may have been tempered by Torment, my introduction to Planescape and the source of what I feel makes for alot of the best feeling of the game. That game basically takes classic DnD and totally turns it upside down. Floating skulls, succubi, and animate suits of armor, and that's just the PCs. It's weird, it doesn't follow the rules, yet it's just another day in the Cage. That's the feel that I always wanted for pnp Planescape, but just didn't work (at least at low levels which is what my group and I prefer to play at) with racial level adjustments, and specified PC races, and such.
So I thought, "Maybe there's another system that Planescape would work better with... what about White Wolf's Storyteller System." For those not familiar with Storyteller, it involves a simple, non-class based, 10-sider using system that allows for very flexible characters who's skills and development is completely in the hands of the players. It is also a much more deadly system, one that I think goes well with the setting.
What do the rest of you think? Potentially good idea? It would take alot of work and alot of pulling resources from different Storyteller sourcebooks, but I think it could turn out to be pretty good
James O'Rance made a Planescape/Storyteller conversion many years ago.
Specifically, Mage: The Ascension.