Good idea. We need to make an interface for that.
Also, can't you make it so it doesn't have to create the file twice if the settings are the same and checking 2 or more publishing locations? (libsyn and local) It shouldn't take twice as long.
Dropbox publishing, google drive publishing... this would make it a lot easier... and the file is created locally before pushing to libsyn anyhow... why not specify a local place to store it.
Possibly could be merged with http://support.hindenburg.com/forums/224350-general/suggestions/11391036-template-projects