I agree with you all that a starter theme makes much more sense that a parent theme. Our fist idea was to work in the theme with _s as a starter, so making a starter theme based on _s is something not only to take in account, but to assume as the way we need to work.

We have updated our kickstarter with this info. Ideas are welcome, we still have 29 days to get more ideas, so don't hesitate to share them with us, here or in kickstarter.

Thank you all.