I notice there are a lot of people against doing anything planescape related because no matter what, it wouldn't be as successful as the first one. I find that flawed for two reasons, namely 1) because the setting is a huge one and allows for immense variety in storytelling, not to mention the radical concepts that could be implement due to its inherent weirdness, and 2) these are some of the people responsible for the awesomeness that is PS:T in the first place, and therefore more than able to create something equally amazing. My opinion is that someone should not be discouraged from outdoing themselves, but rather encouraged to do so if they believe they can. And i don't think there's one member of Obsidian who'd consider touching Planescape in the first place unless they'd be absolutely sure they could bring new ideas that would transcend the awesomeness of the original.