Suggested on the Discord, there should be an option to not place a logo on a season poster.

This should be specified via omit_logo (boolean) under season_posters. For example:

season_posters:
  omit_logo: true # or false

As for the Mini Maker, --season-poster should be modified to --season-poster SOURCE DESTINATION (remove logo as arg[1]); and --season-poster-logo should be created.