My name is Jono and I started as Director of Community back in November at GitHub. Obviously I am pretty new at GitHub, but I thought I would weigh in.
Firstly, thanks for your feedback. I think it is essential that GitHub always has a good sense of not just what works well for our users, but also where the pain points are. Constructive criticism is an important of doing great work. I appreciate how specific and detailed you were in your feedback. Getting a good sense of specific problems provides a more fruitful beginning to a conversation than "it suxx0rs", so I appreciate that.
I am still figuring out how GitHub fits together as an organization but I am happy to take a look into these issues and ensure they are considered in how future work is planned. We have a growing product team at GitHub that I know is passionate about solving the major pain points that rub up against our users. Obviously I can't make any firm commitments as I am not on the product team, but I can ensure the right eyeballs are on this. I also want to explore with my colleagues how we can be a little clearer about future feature and development plans to see if we can reduce some ambiguity.
As I say, I am pretty new, so I am still getting the lay of the land, but feel free to reach out to me personally if you have any further questions or concerns about this or any other issue. I am at jono@github.com.