short answer, no. stick with windows 7.
New Features in MCE: none
Fixed bugs in MCE: none
New bugs in MCE: yes
Removed features in MCE: yes
Native blu-ray support in MCE/Win8: no
MCE is a paid add-on to Windows 8 PRO only (although is supposedly free for next couple of months)
Only XBOX extenders work with win8
3rd party apps may not work - guide tools, metadata tools etc