One of the big problems with CT is that most players who are serious about gearing up their class will just run Coil instead. It gives better loot and takes much less time/effort. Most CT tower runs end in failure not because of new players but because many players are there just to Troll. There are a few new players still running but those are not the majority I would suspect, and more often can easily be coached (if they would just learn to tell people they are new instead of being dumb and hiding in a corner). Your better off spamming HM dungeons for myth tombs or running coil on your main and using a greed party where you call lots.