They said during EAPlay that they don't plan to implement G12 "anytime soon". A lot of players struggle with just G10. They said exclusive gear for Territory Battles. Exclusive gear=raid gear so far. ...
I prefer not gear nor level nor stars nor mods raise. Actually I would prefer the opposite so I could enjoy my full roster without farming for ever those character that are not arena candidates, but can work on PvE and GW without too much investment.