gee i would have tried dota if it wasnt full of kids telling you every second "OMG NOOOOB PLEASE LEAVE OMG PLEAASEEE NOOB LEABE UNINSTAL THE GAME OMG NOOOB"
Its been a while since iread about it, but supposedly valves version will have all types of special coaching features, like people viewing while you play, and being able to talk and give suggestions, and great coaches get extra stuff in game, don't remember what, probably like decorative stuff like badges and costumes. So there's an incentive to teach nooobs, and not to be an ahole while doing it