Ive been experimenting with this type of Brett team a lot, some often overlooked skills are dump off and nerves of steel. Brets are meant for the hand off game and when you keep a runner with dump off next to a Blitzer with his natural catch and nerves of steel, its a complete nightmare for the other team to deal with it and extract the ball. If I get doubles on a Blitzer I grab dodge and he becomes the NoS buddy to the runner, as NoS also lets him extract the ball from tacklezones instead of having to go through it the messy way. Brets are fantastic in that they can bash against agi and they can play a mean rugby-esque finesse game against beefy teams. You need to build players in order to out tool and outsmart the opposition once they get Bashier then you (and they will). Build get mighty blow on your blockers and a DP or two on your honorless little peasants and try to keep the numbers even or in your favor on the field, but don't be afraid to build your blitzers to pull off the occasional jaw dropping elf bullshit, and then perhaps run up to a chaos Minotaur and punch him in the nose.