What is the purpose of the thumbnails? I don't use VLC that often, only use KMplayer to play back. I know VLC is very powerful and can stream, but that come with price of complexity so I didn't invest my time in learning how to use the advance feature.
When I'm selecting various clips to bring into my editing program I find it a lot easier to do so using thumbnails rather than file names. A file name alone gives me no indication of what's on the cip, whereas a thumbnail often does.