Should Microsoft Have Aimed Higher with Windows 10?

Should Microsoft have aimed higher with Windows 10? Its specs match the last three versions of the OS, meaning it can run on hardware from 2006. Is that good?
Windows 10 is currently going through the beta cycle and people seem satisfied with it, not to mention very happy with how receptive Microsoft is to input this time around. It seems well on its way to getting a warm reception when it hits the market in the second quarter of next year.
However, one element of Windows 10 has left a few