Awesome game and concept! If you made the art a bit sharper and polished up the game a bit, this could actually be a really great full game! Also, I noticed you used the Turbowarp Packager :D
I actually created the feature after GMTK jam, because during the jam I found it frustrating when I had to export several builds and reselect all of the configuration options manually each time.
Oh, and by the way, if you use the same project file (name/path), the packager will remember the last options you used. :)