Whew, this discussion is getting a bit unfocused.
Is windowshading technically feasible in 10.7? The example of 10.7 Stickies seems to indicate "yes". But function may not be available except inside Apple. (Anyone here expert enough to navigate the tech docs to find exactly what the OS currently allows outsiders to do?)
Does Apple want to support some form of windowshading? Apparently, "Only in a very narrow context, namely for Stickies."
If it is technically feasible, why would Apple not support windowshading in all contexts? It could be that Apple has determined that windowshading simply isn't very important except to a small number of users. (Seems to me I've seen only a few dozen people post on this issue. Suppose the actual number is 1000 times that. Still only a tiny fraction of the complete user base.) Or Apple has hashed over the issue now for years and decided that general windowshading is inconsistent with the overall design and where they want the design to go. (The fact that general windowshading DID exist once-upon-a-time and was removed from the OS, to me seems to confirm this.)
Will Unsanity suddenly reanamiate and save the day? I'm not holding my breath. (Anyone?)
Will slamming Apple (or Unsanity) get us general windowshading again? Come on, folks. I'm really frustrated! I don't like not having windowshading! A bit of bellyaching is OK, but let's not let it get out hand.