EXTRAs screenshot be changed?

[tom80H]

Plex doesn’t currently support changing the thumb or any metadata for local extras. There’s a feature suggestion to add this option…

Local Trailers and Extras - Edit image, title, etc

I try to include local trailers and extras in my movie sections when I have them, but there doesn't seem to be a way to edit the basic info.  I'm always stuck with the thumbnail image that Plex chooses/creates and, in my case because I use Window, certain characters such as a question mark ( ? ), or a colon ( : ) can't be used in the filename.  I've tried to include images with various naming methods, and include some basic info in the embedded metadata, but no luck.   I'm sure it's considered…