I suggest adding a section in the launcher for "map packs", whether it is for official map packs or even for user created ones it's up to the developers to decide that.

Once you click on the map packs menu, this should pop up, like the other menus a window showing the map packs in tabs and giving some information on them. As well as a download button that will automatically download and install the map pack for the player and a more information button that takes them to the forum thread of that map pack.

That's pretty much it.



