http://forums.spiralknights.com/en/node/73633#comment-636153
"We appreciate your feedback on these new changes and will be monitoring the response and in-game behavior closely.
The idea with the Chaos set is to create a 'glass cannon' style of play. Before this change we felt that it was more glass than cannon. It's possible the buffs were too much and we'll be, as mentioned, examining the feedback. Other sets that seem 'obsolete' now as a result of this change are being evaluated. Please continue a (civil) discussion.
Thanks."
So that is as close as a "Sorry, we totally forgot about Mad Bomber and we messed up" as we can get.
I still remember for the shard bomb change, OOO stood their ground and defended the change (said it's part of more balance changes in the future). And then this.
More and more I believe OOO really does hate bombers, treating all bomber stuff like ugly, misshapen children, best locked in the basement and forgotten.
Some of you guys talk like OOO is neglecting bombers by buffing Chaos and not Mad Bomber. Guys, Chaos's bonuses are universal, i.e., bombers can benefit from them too. I'm not saying that Chaos is balanced or unbalanced; I just wanted to clear up that weird misconception.