As a map pack creator I am very aware that some of my maps are more popular than others. I am concerned that as my library has grown, the good maps have been potentially drowned out by the poorer quality maps. I would love an integrated rating system, so players can feedback on how much they like particular maps, so I know which to remove from the pack and which map styles people seem to enjoy.
On top of this, the fact that there's no easy way to preview a system makes me hesitant to try out new systems. Especially when you could've played through an entire game in the time it takes to look at 4 or 5 systems. Maybe a way to get a super low-poly and/or low-texture preview of the map within the system selection screen would be great. On that note, a way to view and download other mappacks from the community mods within the system selection screen would be some great quality of life.