I just wish they would can the whole challenge thing. It just doesn't fit with the 40k aesthetic IMHO. I mean you have swarms eating all the life on a planet, the "good guys" issuing Terminatus orders left and right and dropping virus bombs from space, but yet... on the battlefield, the combatants have honor enough to stand aside while their commanders fight it out mano-a-mano? Just always strikes me as silly.