People in general are pretty sensitive about their feet. I’ve had experience where a shoe will stand out from a distance as a really unique design, I’ll try it on, only to have it look horrible on the foot. Other times I’ve been given shoes and been like, I would never buy these, popped them on and though, man, these are sweet. Proportions.
i have found that most people are pretty indifferent when it comes to their feet, most people do know what kind of shoe fits them of even their correct shoe size for that matter. i too have had that type of experience too, but can you automatically that up to the proportions of the shoe?
in asking how often you think about proportion when sketching an idea, i meant like are you every time thinking it has to have the proper proportion for its category (toe spring, arch height, possible cushiong, etc.)
maybe a better way i could ask it is what do you think about when come up with sketching ideas for new kicks?