My own tweaked build with Warcry and [Eternal War]. You lose the ability to manually reset your Ironclad, but gain even more armor in exchange. I will need to test this build out before I can make any recommendations.
However, this build would allow for an even more tanky [Rhino], who debuffs surrounding enemies while increasing the armor and melee attack speed of allies.

Tweaked the build for more efficiency and duration. This way, you can actually cast your abilities, have the range to cover enemies/allies with Warcry and Roar, all while having a decent amount of Iron Skin health.

In theory, you will have around 11k IS health with Warcry active. If you charge one enemy, the health jumps to around 14k. Charge 3 enemies and you will have around 20k IS health.

This build won't hit the insane armor numbers of other builds, but you should still be a near unkillable melee machine.