Either Dirt or a specific Roughness filter that give users a few different color mask ranges

I didn't like the option of only having to import a custom mask to filter roughness rather than being able to select a color range or two.

We need to have either a specific filter so we don't have to search within all the filters to find the option burried somewhere, or just provide the option in all filters where it would make sense to add it such as the Dirt filter. 

Also: At any time where a filter option asks for a texture, please have an option to generate the texture/UV with the image depicting the problem we are trying to mask (if known) such as seams -launch it to photoshop. 

Things are not so obvious in the program. Maybe color code filters related to their type such as Height, roughness etc  and another for Universal - it would really accellerate the learning especially if it has a legend that informs users what the colors are related to, then users can explore them specifically when needed rather than spend personal or company time trying to figure out where things are hidden.