The Keyboard Maestro Editor’s only purpose is to create and edit macros. Even if you close the application completely, the Keyboard Maestro Engine is still running in the background. So there’s really no advantage to leaving the Editor running except to be able to access it more quickly when you need to create or edit a macro.
The "team” consists of one person, @peternlewis, who is great about taking into consideration user’s questions and concerns. But since it is just him, understandably he can’t accommodate every request. 
-Chris