[Martijn]

The two addons I maintain are both in the official repo, but the thing I find to be the largest hassle is the email based submission system. I understand perhaps having a manual process for the initial upload of an addon so you can do some quality control, but at some point it would be nice to get approval to just to some kind of pull request from my github repo directly to the addon repo.

Yes!

problem with this is that it will be a great barrier for new git users. Since we don't want history of all code commit you've done in our git repo this will require you to squash all commits into one version bump and then send a PR to us.
So how many regular addon developers would be able to do such a thing?

Ofcourse this would make it so much easier for us to do a review and hit merge button but this would only be something for the more experienced git users (if they use git at all).