In reply to Bastian.

OK, so do I understand correctly that your statement is not actually related to the theme requirements?

It has two sides to it.
Having to setup svn and using that to submit theme updates, compared to only submitting a zip file via a form, it increases the difficulty for some.
It does not lower the entry barrier for submitting themes, which is a big part of what the WordPress leadership has asked the themes team to do.

I hope that eventually we (theme authors) will be able to choose between the form upload and git. That both will work.

The themes team does not work with the backend, -or even the theme directory code. The meta team does, so even if this is something that the themes team would support, the decision and implementation is not up to the team.