I'm not too fussed about player character choices (more about who "I" get to interact with and how) as long as all the choices are taken seriously. No male character in full plate mail and female character in a metal bikini, conversely no female character in period-appropriate dress and male character with dramatic waist-length hair.

The Sims 3 had a slider for both weight and musculature, which gave a really good range of body types, but obviously that's a game that puts a lot of processing power into appearance.