Sounds like it will be another double-edged sword. On one hand it helps force devs to make better drivers, which is a good thing for end-users (unless this results in them releasing driver updates less often and ending support earlier because of the extra work), but on the other hand this will undoubtedly cause problems, in multiple ways.
This will introduce new crashes and BSOD, probably block a lot of legacy drivers thus forcing people to upgrade all their hardware, and will negatively affect anti-cheat software causing a lot of false positive bans (all of this mentioned in the articles too). To me this sounds like what DEP did when it was first introduced back in XP SP2--there was so many games and stuff that had issues with it, which took years to fully resolve.
One of the articles said it requires Hyper-V though, and a lot of gamers disable that kind of stuff so they won't even have the option in the Security Center when they update.