One issue i always had with testing shaders is that every time you want to choose a different one you have to browse through all the folders and files again.
So let’s say i try crt_lottes and after that i want to test the next one. But in order to do that i have to go to the correct folder again and find crt_lottes so i can locate the next one. And that’s if i remember the name of the shader i previously selected (i sometimes forget that because i try to do everything as fast as possible).
Solution: Why not just point you directly to the last shader you selected so you can try the next one in line, much easier and faster?