I know what you mean... but wearing those evenly-decreased hand-knitted socks are soooooo much more comfy than anything store-boughten that I never really questioned that. I guess it's sort of like tube socks... your foot and the stretchiness of the sock are supposted to adapt and cope.
That said, I did once knit a pair for dh that... had a space between the big toe and the other toes for wearing thongs. Kind of like a foot-mitten! Looks weird, but works okay. Gets a lot of funny stares from others, though! lol.
Feel free to experiment if you want! The main requirement to sock toes seems to be that the topside and bottomside of each sock needle have the identical number of sts so you can sew/weave them together.
Hope this helps,