Only referencing the original post question....yes, it's probably the most overplayed build. Every game has one or three of those. Borderlands it was the Hunter. Diablo2 it was the Orb Sorc or Hammerdin. It's how games tend to end up, no matter how they tweak the balance. Shfit the balance, a new 'uber build' style crops up and then everyone overplays that one.
I've always loved ranged combat/builds in all games I've ever played...when it comes to gun-games, I like sniping. I don't choose it to be uber, I choose it because I like it. And like someone else said, I typically don't do a whole lot of "sneaking" - I do some, against certain enemies/situations, and of course I've checked out how effective it is from vast distances in this game - but overall if I'm sneaking, it's because I'm trying to avoid conflict, not to creep up and shoot.
There's something about the rifle/sniping that I enjoy so much. Walking forward/strafing in circles while blasting an automatic bullet sprayer or shotgun just isn't the same at all, to me. (edit)Doesn't have to be a rifle per se. In some games, a pistol/revolver achieves the same feeling, altho not so much in NV for me.