On the Steam Workshop, the Terrain "Mod Type" category is flooded with addons that are not actually terrains (i.e. Chernarus, Livonia, Namalsk, Deer Isle, etc.)
As of writing, there are well over 2,000 mods under this category and it makes it difficult to find new maps (terrains) because so many non-terrain addons are listed there.
A simple solution to fix this problem would be to only allow addons that actually use terrain files to utilize this category. It would make it easier for people to look for newly released maps and not have to look through several pages of mods that have nothing to do with the category.
The Counter Strike 2 Workshop is a great example, it only allows real map addons to be ticked under the "Map" category.