Obsidian's Chris Avellone has revealed he is "very tempted" by the idea of starting up a Planescape Kickstarter fund.
"I don't know if I'd want to do it as a Planescape game," he told Games Industry. "I think a better approach would be to ignore the D&D mechanics and respect what Planescape was trying to do and what the game did and see if you can do what Fallout did when it became the spiritual successor to Wasteland."
"I think if you made a game using some of the concepts of Planescape, the metaphysical ideas and the plane travel, without using the D&D mechanics, you could actually come up with a much better game," he explained.
"With Torment, I'd argue that the D&D base actually, in places, got in the way of the experience. It was a lot harder to make a game with those ideas in it with D&D mechanics. So much that we had to break a lot of them. We had to ignore certain spells, change up the class mechanic so that you can switch at any time you like by remembering abilities."
He concluded the interview by saying: "That was stuff that D&D didn't allow for, it was too restraining in some respects. If we did do a spiritual successor, then I don't know if we'd use the Planescape licence or attach the mechanics, perhaps something that has a different feel to Torment."
Planescape is a D&D Realm and so ditching the ruleset provided by the license would mean creating a new setting. Given the recent success of Wasteland 2's Kickstarter campaign, a Planescape reboot would likely have widespread appeal and would probably have no trouble attracting enough backers to get started.