The only real way to fix this is to just put the packs back at the same price.
Some People are failing to see the full scope of what just happened, Its not about getting a 5 star Sakura or Sasuke. Its about the fragment refines. If any player was smart enough to claim as many packs as possible you basically just got a 5 star Iruka/ Upgraded Tailed beast Naruto and how ever many seals or summon scrolls you get from all the fragments you refine. The year I've played this game will never be on par with the amount of free things those players got that morning.
Nothing of Compensation will Equal to any of that and also, players who took advantage of that will also get compensation?
Any one like me who saw "This is not a bug its intended", thought "oh okay I can go about my day and come home and get all this awesome stuff" we all just got played and there's nothing we can do about it.