I will get excited about unsubstantiated TV series rumours when I find out who the head writer is and it's somebody I like. If they bring back the trickster element of the original series, so Kirk is outsmarting his enemies again, that would rock.
I agree the third NuTrek movie should narrow the scope. Or if not that, isolate the ship. Use the whole 'Five year mission' thing ID established, have the ship be out there on their own when the new threat is established, so nobody else is in range to help them.