Looking at the Guildpact spoiler so far it is looking more and more like the Dimir guild may have had some say in why the 4 pack sealed events disappeared. I am not saying it is the only reason but it looks like you could open some pretty busted pools. Even more busted then the AVR mill decks that I had or played against.
Now I may not be the best a limited card evaluation and you may disagree with me but I would love to hear your opinions on my opinion.
Do you agree: Yes? No? Maybe?
Sure, but you only get 4 packs so the odds of having enough cards to mill someone out are what? Pretty low I think. You've got a much better chance of seeing that in draft since the table is opening up 24 packs of UB goodness.