And 3D...let me stretch this here even further...ALL 3D is a fad feature.
I'm an avid videophile...LOVE movies. Hate theaters and hate 3D. Frankly, I don't see a purpose for either. I have a home theater -- why would I want to go out in public, pay through the nose for tickets and snacks, and watch a movie with 200 strangers annoying the crap out of me while I'm trying to watch a movie? Now, why would I want to do all that and deal with the nuisance of 3D, too? I already wear glasses, why would I want to wear a second pair of glasses to watch a movie full of gimmick shots/scenes of things poking me in the head?
99.9% of the people I know who own iPhones, Evo's, or any other video capable phone don't even know how to get a movie on the phone, and they sure as heck aren't going to sit down and watch a movie on their phone for 2 hours (if they're battery can even do that). So, really, what's the purpose of 3D on a phone?
It's a rhetorical question -- Because HTC can, that's why. That's the very definition of overkill. It's not needed, but because you can do it, you're doing it. You don't need a Ferrari to commute to and from your 9-5 job, but if you had the means to get one and drive it for that commute, you would. Hell, I would. That doesn't mean it's not stupid....and overkill.