So I think it would be cool if there was the ability to pin one (or some) of your map(s).
This means that this map always appears on top of the maps, displayed on your profile page, and has something that draws attention to it (like displayed bigger/ with a colour/ bold/ ...)
Would, for example, be useful when you have a singleplayer series with like a quadrillion maps. You just pin the first map, and then people don't have to search for that first map between all the others.