Of a gimmick honestly.
Pretty much one of my eyes isn't fully functioning, had surgeries and such, but still is pretty much useless when i;m not wearing my glasses. I don't bring my glasses out when i go out. So i tried 2 different 3DS demo units with Pilot Wings. No dice, tried moving around, moving the 3DS, changing the slider, nothing changed for me.
Though to be fair when i do eventually get one i planned on pretty much keeping the slider all the way down anyway. While my glasses do make my messed up eye usable, no clue if it will change the fact that i can't see the 3D effects.
Honestly i'm actually starting to get annoyed with the whole "gimmicks" nintendo seems to do with new things.The Motion controls were never really that fun on the Wii, only games i really enjoyed with Motion Controls was Wii Sports, and probably Skyward Sword, if it plays good.
For the DS a lot of the time i found myself trying not to use the touch screen unless the games specifically called for it. I don't mind a lot of the touch screen games i've played, though the only thing new the 3DS adds is better stuff on the inside, an analog stick, which felt very nice when i tried Pilot Wings, and the 3D effects.
Honestly do the 3D effects really add anything new besides pop-out or the box view i assume Pilot Wings has based on the picture at Gamestop. I'm not saying it's a bad thing, but whatever happened to just regular gaming, now even the NGP wants to add Touch Screen and act like it's something new.
I;m actually pretty worried about the Wii 2 at this rate. I guess this is more of a why do companies insist on adding "gimmicks" to things that really don't need it.
I'm not against the 3D effects, just that not being able to see the 3D effects kind of made me see the 3D as more of a gimmick then something that would improve general gameplay or the experience of the Handheld. I will still be getting one, because of Persona 3DS, Resident Evil, the good one with a story, not the Mercenaries crap., and other games i want