Knocking a few ideas around
Something from that alphabet thread from a few days ago, e.g. you have to pick someone whose name starts with the last letter of the last player you picked, or you have to pick all your 12 players in alphabetical order.
A draft where you can only picked players who never played a test, or players who played a maximum of x tests. Or say everyone has a maximum of (say) 150 Tests to "spend" on their team, and your 12 players must have played fewer than 150 Tests between them.
Everyone available, but the draft order for each round is determined by the batting averages of every player picked in the previous round.