Not sure what's new here...blue players have been hounding for the restriction of Workshop for ages.
I define a deck as being 'blue' pretty much if it can support FoW and has a MINIMUM of 14 blue cards.
When you see tournament results it's funny how 'blue' decks are put in so many categories lol...how do you want to win with blue? Oath? Tinker? Planeswalker?
Then notice pretty much all Workshop decks are put in one category (Shop) instead of Workshop Control, Workshop Aggro, or Workshop Combo.
If you did the same thing with Blue decks and lumped them all together, you would see a trend at who's been winning tournaments in higher numbers for years now... yet restricting Workshop is still the call? Geez, the more things change the more they stay the same.