Replay was an option on Crescent; it was nice at times, but if there was a map you really disliked, it wasn't a great experience. Also, going into a loading screen just to load the same map is a somewhat meh experience.
I think map diversity should be encouraged more, and replaying somewhat hurts that. I feel like there are maps that could become someone's favorite, but they'd never know because so few unique maps are ever picked.