Powercreep isnt as big of a problem as you think

Well, what ya think if adjusting armor, so that it blocks exactly 37.5 damage.

Then using mix of hp and armor, to get 12.5hp increments of healthbar adjustments to Tanks.

Then use that to attempt to maximize a diversity of Tank usage rates, using some sort of math formula.

Updated every 1-2 weeks.

Or better yet, updated on Quickplay, and then updated on Comp 1 week later. And do that so that it alternates every week.