Who at CG thinks 574% Defense is a "good idea"?

If you look at how stats work though, the 200% is a waste
A unit with 50% damage mitigation
+376% changes that to 82.65
+567% changes that to 87.12%

So the extra 200% gains less than 5% damage mitigation and takes some time to even get that.

Don't know what the other faction abilities are, to me there would be some other one that would be better than getting another 5% damage mitigation.