I made a post some months ago about fetishes and I hoped someone would tell me stuff to give me confidence to admit a very strange curiosity of self.
I think we should probably draw a distinction between a fetish and something not so strong like a kink.
Someone with a fetish needs that fetish gratified, like a compulsion. It's not the same as a weird fascination, or
really liking bits of the body or types of clothing, etc. So it's not that weird to really dislike feet, or to find them hugely attractive. But if you
need to have your girlfriend put her heels on in order to get properly sexually excited, that's fetish territory. Fetishes are I suspect pretty awful: in effect you will never be able to form a lasting relationship without someone willing to service it as you will always feel something missing. Consequently a relationship will more likely be about finding someone to service that fetish rather than love, emotional support and all that jazz.
I don't think reverse sandals are likely to catch on I'm afraid.
I had a pair of sandals with some heavy duty toecaps: they were designed for serious walking on rough terrain where your toes might be a bit vulnerable to loose stones, etc. Pretty good, although I find even the best sandals tend to have straps that raise blisters, particularly around the heel, for anything beyond light use.