The doc does have a big viewer base right? And I know for a fact that he plays csgo since I saw some vids of him a time ago. But I don't think making it a streamer fest would be a good thing, so mb invite just a couple of relevant ones like you said in your initial post. I would personally go for retired 1.6 & source players vs current players showmatches or old vs new lineups, mb even some pugs or 1v1s where ppl from the crowd play in mix teams with the casters, old players and current players. You could even have a danger zone tourney on the side since it's part of the game.