I'm not sure what you're asking. Are you just requesting that we add actor images at the season level?
Well yes possibly, and also guest star images per episode, but that was a side outcome of a not very well explained start. What I was trying to get at then deviated from was that some images are ROLES and not ACTORS which is correct, according to site rules. Except this means that they are not ACTOR images, they are ROLE images.
Where there are some duplicated ROLE images across SHOWS (bad), ACTORS across SHOWS (good - but bad, in they are not ROLE thumbs). In fact looking back I ended up broken posting as I managed to break the command line I was using to generate the demo image list.
I'll think about this further.