Set cube ratio
What does going from 4/2/1 to 6/2/1 achieve? I'm obviously not great with stats, but doesn't adding two more of each common keep the odds the same?
If no other reason, I'm thinking of upping the commons just so I can build more packs. Right now when I'm done building packs I still have a huge pile of rares and mythics left over after I run out of commons.