she will not make an appearance right away because of legal issues but she will be there it has been confirmed. and the show will turn more towards the team its self at some point and less of the side kick thing as it goes on so and beast boy was a main staple in the young justice teen titan teams. and since its an independent universe we could see some teen titan members in the young justice team the creators even said when they were picking the team the were going through over 100 character to pick through and that was just the members we know of now those over 100 have a good chance of showing up at least some of them. like static, blue beetle, Argent, Hotspot, zatara or Zatanna, starfire or many others. plus some of the original YJ members like Empress, Secret, Slobo, and Ray. its all really up in the air right now but i am sure it will be epic no matter who shows up. my main point is since this is an independent time line its very possible that we just see young justice and the teen titans blend and become a succession type thing. meaning we could see a mix of the members.