If you got it directly from MS - demand your money back. I did on a SP2 - got a refund OUTSIDE of the 12 months! - If there is a bug that stops you using the device in the way you want to use it (they are selling something not fit for purpose and you can get your money back. Surface Book 2 wont be as good as it can either, looking at Microsoft (and other tech companies) its version, 3, 4 or 5 that hit the sweet spot.
I would hope that a follow up to the Surface Book will improve upon the issues with the first gen unit, and I do believe that MS will work towards this goal. They've done some great things with the Surface line and I have no plans to completely abandon their hardware, either. I have owned several generations of Surface units (there are currently 3 Surface machines in my house -- my old SP3, my husband's SP2, and my Surface Book), but collectively, we have both owned the original RT as well as a Surface 2. I didn't buy into the Surface Pro 1 mostly because of the size/weight of the device. The Surface Book has been the first truly disappointing Surface purchase I've made. The inconsistency and basic level of problems that plague every single unit (use cases will either suppress or highlight these) is appalling to me.
The last round of updates (April 19) are what finally made my Surface Book usable and
relatively stable again since the fall Win10 update came out in November of last year. I'm still nowhere near satisfied, but the level of progress and stability they've finally achieved makes me not care as much to actually go after MS to get my money back. I have not seen *knock on wood* a BSOD in over a month -- this is fantastic. For me, sleep crashing is the last major hurdle they really need to address, along with more minor things like continued issues with the Intel video driver. At least now, the Surface Book isn't my sole PC and it works decently enough most of the time.
I hope they fix the problems with the Surface Book before releasing a 2nd gen unit, but I won't be completely shocked if they try to sweep it and the SP4 under the rug and move on from both next year.