Personally, I'm opposed to it to the point where if, with a guarantee it would work, someone invented a device that could take out memories, I'd take out the images of the teaser.
Now, don't get me wrong, it doesn't seem half-bad from a non-fan, objective, and non-me point of view, but as the years go by I seem to be more and more of a person of nostalgia; that I'd like to go back and revisit my younger days, back where I was more youthful, more ignorant, and when Trek was better (in my view, of course). Even if it was just for a couple years back in time...
I don't know. It's more of me than anything else why. I don't think it's necessarily that television/movies and entertainment are taking a turn for the worst. In some or many ways, they are, but I'm just fighting the urge to see things change. Look where "rebooting" (and I know it officially wasn't, but it felt that way to me) took Enterprise... Putting a TNG flair to something supposedly TOS (or pre-TOS), or, as it seems from what I've read, putting a Starship Troopers/Star Wars/other Scifi feel to Star Trek... It may work for a bit and may attract a non-fan that would've otherwise been turned off by gold, mustard, and blue sweatshirts for uniforms (2250s Starfleet attire) would give it a try but I doubt it'd last long.
I had thought that, after 2005 (the remastering of TOS episodes with new graphics aside), Trek would, for the most part, be in the hands of the fans who want to celebrate it and, perhaps in their own way, improve upon it as they see things themselves. And, while I'm not some huge fan of fan films, it seemed to have worked for the most part.
But, I think it just won't work for me, not because of anything J.J. Abrams or anyone else have done or will do, but mainly because of me. But who knows? Maybe the film would be a success and much of the fan base would flock from a few veteran trek actors (and a lot of fans recasting the main Big E crew) making films themselves to a handful of professional actors (also recasting the Big E crew) and a veteran Trek actor making an official BSG-ish Trek film. Though I have to wonder how stable this new Enterprise would be in flight when welded together like an old WWII battleship...
Since Batman Begins was brought up, I should also note I kind-of felt similarly with that film (and the upcoming one). I might shrug off my idiocy and see it though, since it seems to be highly praised.