id like to try coaching because we used to have something similar when i played tribes, basically coaches would come into mumble and pair up with someone who played the same role although the community there was a lot more close knit
im put off coaching newbie mixes because like capn said people dont bother getting a basic understanding of the competitive format, from what ive seen from other peoples streams the players in newbie mixes are like what you'd expect the average user of /r/tf2 to be (14 and loves memes) and some can be really obnoxious and dont understand social interaction