the aren't putting him in the live action show because the cost of changing a boy into an animal several times an episode is going to coat a lot. And even if they did have the money it would look pretty bad and unbelevable. i agree on the hawk and dove part though.
They could at least put in Cyborg, Smallville pretty much nailed him.
The reason hes not gonna be in there is because hes going to be in the movies.