I think it’s a good very useful idea. Not sure what the best approach would be. We should run this by @Josh.
This a weakness in all discussion forums. Material is scattered and often forgotten. Some threads are very rich, some just meh. A newbie may not know what to search for. Knowing keywords is half the search. And this site is a goldmine - we should mine it 
In many forums they have ‘stickies’. Valuable threads that stay at the top of the list even as new ones appear. I think this thread would be a very good choice for a sticky.
There’s also threads that have just one especially valuable contribution worth saving. It would be good if we could extract those and organize them but I don’t know about the propriety of editing other people’s material this way.