That's actually happened at least once in history [1]:

> Convict women in Australia were British prisoners whom the government increasingly sent out during the era of transportation (1787-1868) in order to develop the penal outpost of New South Wales (now a state of Australia) into a viable colony.

[1] https://en.wikipedia.org/wiki/Convict_women_in_Australia

This would have some extremely interesting population-level genetic consequences if it was accompanied by some sort of social change to allow polygyny. In particular, it would reduce the correlation that exists across all adaptive traits due to assortative monogamous mating patterns. Right now, all "desirable" traits like health/intelligence/strength/etc are strongly correlated, but when you reduce the strength of assortative effects, the correlation weakens significantly.