thanks for the comment...there is a reason why we don't do it yet...it's because the themes framework is not finalized yet. As a result, the themes are being modified at the moment and need to be updated with the app. Our goal is to avoid that as well...but it is simpler to send nearly everything in the app for now, because you would have to download the themes updates anyway.
We are currently adding a lot of new features in the themes that will be unveiled later this year...the code for our themes should not change anymore...and we will be a ble to reduce the download size.