.... you hadda know there's be a 'but' :) )
I think what Julie said, above has merit. It is probably inevitable that some would use it for self-agrandizement.
Apart from that, I like the idea. You and I have talked about this issue before - not your specific OP proposal here, but the idea that good threads with real meat tend to die in favor of something controversial or fluffy. GD is, indeed, becoming Lounge-like.
Just the other day, I posted this.
The bigger 'national security' crisis that nobody is talking about. Sure, it got 14 noms and stayed on the Greatest page for a while. But the volume of discussion replies - which was why I posted it - was slim. It literally got half the replies as it did noms. Obviously some people thought it worthwhile. Would more time in active, first page GDPol status have gotten it more replies and some meaningful discussion? Who knows.
I'd like to see a superforum, on the same level as GD and GDPol, for **NON** breaking news. Things or events that are no **less** than ..... whatever .... 48 hours old. 72 hours old. That's where that linked post, above, would have gone. The point being, such a forum would be less likely to have 'Tourettes Posts' (and of which I admit to being guilty.) that are knee-jerks to things said by Tweety to his guest du jour.