The most annoying thing right now it's mannouver nodes. I don't see how long it will be burning.
And to be honest I missed starting a game with so many unknowns. Reminds me a lot of when I started to play ksp1. People will have to learn new ways to get things done, and they will. Besides bugs most comments I see is the kind: I used to X and now I can't. Remember that in ksp1 you didn't know that you needed to do X! Let's learn again :)