First off, it's very exciting to see this project. This has seemed like a glaring omission in the Drupal wheelhouse for a long time. For the project I'm currently developing, we've wanted a lightweight CRM system tightly integrated with Drupal from the beginning, so until this point we've been either had the option of using CiviCRM or building out something else that meets our needs.
It would be nice to see a roadmap for this project, so we could get a better handle on where you intend to take it. I know its difficult to put timelines on something like this, and a lot of people are probably asking you for just that, but it would be helpful to have some details on how you intend to structure the project and integrate other key D7 modules, such as Drupal Commerce and Address or, as @joachim mentioned, Profile2.
I'm also sort of curious if you're already building this out for a specific client.
Thanks a lot.