Having a queue of beatmaps which are to be played over the next few games would make the whole process of changing maps/downloading maps significantly smoother and faster.
The host doesn't have to spend as much time between each round picking a beatmap, and the other players in the game can be downloading the maps for the games to come, so the downloads can happen during games, rather than while everyone's waiting for them.
The host doesn't have to spend as much time between each round picking a beatmap, and the other players in the game can be downloading the maps for the games to come, so the downloads can happen during games, rather than while everyone's waiting for them.