I think it looks better without em IMO it's cleaner. The only time I would sticker my helmet is if I were sponsored. Really it's just whatver you want to do and whatever you think looks best.
I dont understand this. The only time i would get a new helmet would be if my head shape drastically changed (which is unlikely) or it wasnt providing sufficient protection anymore due to interior shell integrity and i for sure as hell wouldn't knowingly sell a helmet that isnt going to be safe for someone else so i dont see how the selling comment is relevant to anybody.
Yeah you really shouldent be selling helmets. Helmets have an effective lifespan of about 5 years with no impacts whatsoever, especially in the temps ski helmets are exposed to. Combine that with the fact that I would say most people who ski park have at least a few slams a year that the factory would recommend you replace the helmet on anyway equals highly unsafe to sell.
If the stickers start to overlap and cover one another, then its too much. Or stickers that have absolutely nothing to do with skiing such as brewery stickers