1. Despite the fact that I made my main from that planet just because I feel a need to redeem them, the "1940s Space Africans" from that really racist TNG episode in the first season.

2. I suspect the Kazon will be a popular pick. Because they were dorks.

3. As will be the Pakleds.

4. And the Orions, while iconic, are made of the fears and resentments of millions of babymen and social conservatives, and are pretty embarrassing to think about in the 21st century.