Dallas does now have an exceptionally deep team, maybe one of the deepest in the league.
Guards: Irving, Dinwiddie, Hardy,
Wings: Thompson, Washington, Marshall, Martin, Christie, Prosper
Bigs: Davis, Lively, Gafford
All these guys either can play right now, or are young and have potential to crack the rotation in the near future. Even Exum and Powell are pretty solid for deep bench/emergency guys. If Irving and Davis both stay healthy (BIG if) they will be pretty good.