I'm glad I'm not the only one who thought this existed.  I'm a little shorter than average for a guy, but fit and I lift, so with modern sizing I've always had the problem of shirts being too long.  So I can either get shirts that are too tight in the chest but the right length (Small), or shirts that are too long but fit correctly in the chest (Medium). Recently I inherited some vintage college sweaters and band t shirts from my uncle from the 1970s.   They are all Mediums and all fit me perfectly.  I thought I just had a weird body type but I now realize that it's just because Americans are much fatter than they were in the 70s so they make men's shirts longer now to hide their fat stomachs.  "Vanity" sizing.