We do not offer this option in Automatches.
The more filters we would put in, the longer the players would have to wait for a match, because the player base would be split up more and more.
The crad stack mode does also alter the dynamics of CATAN. The initial placement gets more important since dice rolls get more predictable. Since our Catanians can´t decide which position on the table they are in before the game starts, we do strongly believe that this would discourage Catanians from using this option altogether.