Madrak3 is definitely intriguing on those split scenarios. I'd actually be curious to CID test the stone at FA2 under these scenarios; I could see double min stone being a decent choice. Most concerning thing about that would probably be stacking different elder buffs, but the 18pts of support bloat needed to do any of that really contains any possible brokenness.
You could run them with Madrak2 so they are potentially weaponmasters in the end game.
“Don't mistake my kindness for weakness. I am kind to everyone, but when someone is unkind to me, weak is not what you are going to remember about me.”