Why does he have to be a Trekkie, or have a connection to Trek? Mayer and Abrams where not Trekkies and both did a great job. What you need is respect for the franchise itself. If you don't, you get Stuart Baird. Trekkie or no, just give us a top director who knows what he's doing.
To be honest I think JJ will do a great job on Star Wars.
Its his thing anyway, he's on record countless times saying he was more Wars than Trek. I love Star Wars, I just love Trek more, but that said, I still want a good Star Wars movie too. JJ lifted Trek out of the doldrums with his reboot, and I think with the first movie he really managed the impossible with giving a prequel without tying himself down to the established canon. A really good job.
Just imagine what he'll do with the budget of a Star Wars movie, no problems about breaking from the established canon, (sequels rather than prequels), its gonna be (should be) freakin awesome.
I agree with everything, although i'm more SW fan than ST.