I approve, simply because I run a mono light/splash fire deck and pillar denial against it makes me mad, and I need the splash fire so I can't use protect artifact.
Then again, just because it'd be helpful to my deck doesn't make it a good card
. I mean, a 16-light cost insta-win card would help my deck, too...
All in all, too similar to protect artifact and using it instead of protect artifact would be too situational. The upgraded version, on the other hand, could end up making pillar denial Earth/Time decks completely unusable.