1 tank 2 specialist 2 assassins and 1 Support Depending on the map the enemy team and how comfortable you are with your camp and allies there is no real way to say what a great team set up would be.

Abathur Can be the champ that wins the whole game for you if you can play him correctly, nearly every talent you pick has to me picked with a full strategy in mind as well as adapting to the enemy team set up and how they play. If you can not handle mass information quickly or communicate with your team effectively then he is more of a burden not for beginners. but once you know how he works and are comfortable with the mechanics of his systems it makes your team so much stronger than a team...