i like the idea of not being able to vote if you enter...but that would be impossible. why not just wait until the last day to enter?
as for photoshopping...i think its just a matter of convenience. I think the idea should be the biggest factor. some ideas might be too epic to actually catch on film...its the GoPro footage that would actually give the idea traction and meaning. not a picture of that idea with a person wearing a fake go pro