I am rooting for them too. I used the Surface Pro 4 for 3 months. I loved it. The hardware is great. The pen is wonderful. The versatility was incredible, going from laptop to tablet and back.
I did eventually go back to my MacBook Pro because it is a more powerful machine.
In the end I am rooting for the one device for everything solution. I want a computer in my pocket that is a phone when I need to to be a phone. It’s a computer when I dock it at my desk. It casts to my TV and serves my entertainment. There is no syncing or switching between devices.
I saw HP is doing some of this with a Windows 10 phone. It’s exciting.