@Riot: Goal for defense masteries?

I ask because I see "Oppression" is being moved farther down and is changing from 3% to 2% while swiftness and tenacity are being moved farther up top.

As a big user of the Oppression mastery (like stupidly large amount.. I'll use it on anyone who can make use of it) I'm just wondering what the overall goal for the defense mastery changes are?

It seems like if you go really deep in the tree you can be ridiculously tanky now, but on the other hand I've always felt part of the trees weakness is the hp line to Juggernaut primarily because it's the only thing in that part of the tree you are ever going to take and thereby creates a lack of options.

I'd say something like 80% of all people going into defense masteries whether it be 9/21 or 21/9 always land up with Juggernaut.