I didn't mean to be evasive.
I am not currently pursuing a PS license or any other kind of license. I don't enjoy working on licensed products much, as there are almost always too many Cooks in the kitchen (pun intended, sorry) in such projects.
If WotC offered me a truckload of money to do it as a book for them, or a licensing opportunity did come along that was both economically viable and without a lot of strings attached, I'd probably consider it, but that's only because of my love for the setting and the work that was done on it. And even then, I'm not saying it would happen.
This latter point is a moot one, however, as WotC is not currently entertaining any new licensing agreements with any of their properties.
I truly, sincerely appreciate the kind words and the votes of confidence, but unless things change rather dramatically on WotC's end, anyone doing anything official with Planescape just will not happen. That's about as un-evasive as it can get, I think.