MaRo: Stickers were a 'goof,' and he originally wanted them in EDH!

According to a series of recent posts on his Blog, MaRo admits:

• Stickers and attractions were a mistake and won't be revisited
• They weren't supposed to be strong enough to play in competitive eternal play
• He would've preferred they only be legal in Commander, but not Legacy/Vintage!

What do you think about this admission? Did you see it coming a mile away? If he didn't want them legal in 60-card eternal formats, why did they go through the effort of a mixed-legality change, and why didn't they just do that for Commander exclusively?