1) It would be nice to add a sub-section called Contest Winners and a sub-section called Old Maps, Scenarios, and Campaigns - I envision it like this:
General Section
MAPS for Heroes of Might and Magic 5: "Tribes of the East"
Sub-sections
Multiplayer
Scenarios
Campaigns
Contest Winners
Old Maps, Scenarios, and Campaigns
Regarding maps and scenarios with mods, I agree that there is no point in specifying this in the title, as by default any map is a mod, but in the detailed description, you can indicate that there are mods. This will help avoid unnecessary bugs, freezes, and game crashes Because the map author may add several mods that often conflict with the mods used by the player.