Much like the original author of this cube I too enjoyed drafting 2X2! I cloned their cube with the intent of tinkering with it, but it turned out to be perfect. I may add 1 to 2 "Chaos God" packs into the mix with Mythics, Rares, and other busted stuff to spice it up. Below is the original Author's Strategy notes for the cube. I do not take any credit for this.
Pack Breakdown:
3 Rares (72)
4 Uncommons (96)
8 Commons (192)
1 Cryptic Spire (24)