I think its a good idea and will give it a try next time I need to spin up a theme.
Ignore the negativity in these comments. This is a great example of scratching your own itch and being generous enough to place it on Github. Who cares if the bulk of WordPress users won't grok it? That's no reason not to build it. Thanks for sharing.
IF you're not already familiar with the theme creation process already. Seems like a solution for engineers whom are encountering WP for the first time. Which may not be bad thing as WP has been around some time.
Wordless, at its core, is just a big set of helper methods, plus a way to compile SASS/Coffeescript without the need to open a terminal, plus the embedded Phampl library to write views. So yes, the theme depends on the plugin, just like any other Wordpress plugin.
