First Quake launcher that I found that allow me to use my own custom made thumbnails to visually represent my mod folder. I'm a visual type of guy, so browsing any collection only using folder names is boring. Give me anything that allow me to quickly browse my hundreds of mods only using my eyes, along with the ability to automatically match them with their dependencies, and I will instantly fall in deep love with you <3 (homosexuality included :3)
In the main launcher window, it is impossible to delete the "id1" folder.
If you deleted folders in the add mod window, you could delete the "id1" folder if the first letter of the folder was in uppercase "Id1". I will fix this in the new version of the launcher. I'm sorry that you encountered such a problem.