Update 2009 15 Feb: More information on Dragonfire
I received a bit more information on the limitations of the SDK. From some one on the DragonFireSDK Team:
I wanted to let you know that the disadvantage you described in your article is strictly for our beta testers. Version 1.0 purchasers will have access to our Build Server where they can actually build their .app on one our our Mac servers. This will remove the "middle man".
More information on this can be found a
http://dragonfiresdk.com/buildserver.htm From looking at the page you can see that if you were to upload your program source an application deployment would be created and sent back to you.