I always laugh when people complain about issues when they are in a testing program. It's 'beta' software for a reason folks - don't install it unless you aren't depending on your device to be your daily driver. That said, I think MS is throwing in the towel on Windows for Mobile soon, but not for the reasons you think. I think that people haven't adopted the platform like they hoped. People aren't developing Apps for the platform like they hoped. People aren't excited about the platform like they hoped. Overall, the platform has failed to do anything that they want it to. So, without further ado, I see a partnership with Intel coming where full blow Windows 10 gets rolling on the Surface Phone before the end of the year - like probably in time for the holidays.
Yes, abandoning the mobile in favor of a full version of Windows 10 would allow mobile tablets and phones to run EXE files and could load it as a PC using the Windows to Go protocols to make Continuum much more powerful. I think the Windows for Mobile idea is something that will build to a full blown version of Windows on a mobile device as soon as they have the hardware that will handle it.
Just my two cents though...