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.
Is there a DS9 connection I'm not getting? Why not? Because no one other than a couple geeks would watch any of those shows. Well, he asked.
But, in the first two NuTrek films a threat to Earth comes from the outside and Kirk is the one in the position to defend against it. If the threat in the third film came from something they discovered while exploring, and the ship were so far away from Earth that even a communication wouldn't reach them in weeks, that would feel like Star Trek. They'll probably just do a Klingon war.
I was being disingenuous. What I meant was that even though the Enterprise was near Earth in both JJ Treks, there was no one else around to help. The old, "Only ship in the quadrant" ridiculousness that still persists.