What kind of look needs to be brought back v.02

For curly hairs / afro: The 60's 70's disco suits, stripes of contrasting colors, bell bottoms, draped long sleeves.

For asian people: We tend to have our own good and bad colors, and would look really good on the good ones or really bad on the bad ones. T - Shirt combined with bracers like basketball bracers or tennis bracers would work really well on the right colors.
Red tends to make the female stand out, some people dare not to do that but if a lot of people are doing that then it should be acceptable. The world would be more beautiful.

For SEA people: Stripes of yellow on black is something that would work well. Hints of yellow or patterns of yellow on top of black. Yellow or Gold. White and brown should be good as well. Just 2 colors. If it were blue, then blue with red.
Vests, army vests or non army vests.

For male Javanese: I'm telling you, blankon, short trousers, shirtless... everybody should go for it.
But no one's going to do that so, javanese style shirt (formal) paired with regular trousers or buttoned shorts. Somehow if you could make short sleeve work then that would also be nice.  

Accessories: Suspenders, it would work well for short people.