Good question. I was talking with Yawgmoth in Discord. He said that with Armor 2.0s failure, they are back to looking at armor cards in general. The buff to Hearts of Bronze was necessary if armor became degradable. With permanent armor, I think the card is good as is.
I just created a new post about a relic deck. This is because the amount of Tempo Magic decks is climbing quickly. Creature-based war decks (including this one) really struggle if they can't reach/remove the ordered cards. The only hope is to switch to Slayer and try to face race. I still think you can play the Enrage GP against all other gods, though.