Any chance to change the license over to GPL?
Short Answer: No.
Longer Answer:
We are currently licensed as Apache 2.0 and are satisfied with the constraints of that license. Virtually all products released at Microsoft as OSS are released under MIT or Apache 2.0. We haven't had issues with the license we are using and have no plans to change it.
Thanks for your feedback! Also, I hope you enjoyed PyData Seattle! (just came across your Twitter handle and noticed a few photos)
As for the other things they aren't complete yet but they are definitely very valid suggestions. If you would file issues on http://github.com/Microsoft/PTVS we can track them and hopefully keep you posted on the progress to getting them into the product.