My hope is that this change will eliminate some of the pain of running down security bulletin data. Right now if someone asks you if you are patched against MS16-040 you have to go look that up, look up each individual KB inside that, see which ones have been superseded by other updates and check that against your CMDB. Making that simpler would be a win-win.
Full disclosure, I work for Microsoft as a dedicated PFE. The above is my opinion and hope, not paid shilling.