While I was not expecting a Surface Book 2 to be announced at this event I really hope it comes out this year. I think the Surface Book needs a refresh this fall with a more powerful processor and USB Type C.
BTW - I was not that impressed with the Surface Laptop that was announced either as it suited for a very niche segment.
That's only cause of the high price. The Surface Book can be used as laptop just fine and has some cool added features (removal tablet, pen input, etc.) If it was priced lower it would appeal to a lot more people.
The Surface Laptop with Windows 10S is limited. Granted someone can upgrade to Windows 10 but that's not how they are marketing it.
I've had my Surface Book since December and being a Beta Tester is the last thing I would consider myself! This laptop/tablet has been remarkable. But like any product there are lemons so it is quite possible that you have one. Have you considered returning your since it sound like it is full of issues?