In order to avoid changing rules or settings at this point, I would suggest you guys compile a list of suggestions to be implemented/changed for the next season.
About the map arguments, though, I have never seen a competition where players couldn't choose their own maps. That sounds like a recipe for disaster in a normal competition, but it could be fun as a weekly "random map play" event from the community. If someone wanted to organize something like that, we'd certainly do everything we can to help out.