I suspect Muon2's fingerprints are all over this puppy behind the curtain. He is not focused like a laser beam on his little redistricting algorithms as a mere hobby. Now if I can just get him to put erosity issues at the top of the list, life would be beautiful. And I hereby give him permission to use my beautiful non partisan Illinois map as to what might have been in a world without partisan hacks at the wheel, for agitprop purposes.
Compactness is not one of the criteria.
The criteria are:
(0) substantial population equality;
(1) the district plan shall not dilute or diminish the ability of a racial or language minority community to elect the candidates of its choice, including when voting in concert with other persons;
(2) districts shall respect the geographic integrity of units of local government;
(3) districts shall respect the geographic integrity of communities sharing common social and economic interests, which do not include relationships with political parties or candidates for office; and
(4) the district plan shall not either purposefully or significantly discriminate against or favor any political party or group.
The criteria are sufficiently in conflict and ambiguous to ensure that the plan will end up being reviewed, and possibly revised by the courts. The purpose for transparency is simply to build a record for the plaintiffs; and to serve as a mechanism to coerce the commissions decisions.
The selection method could produce a situation like in Arizona. Illinois does not register by party. A voter may affiliate with a party at the primary. Is an unaffiliated voter someone who doesn't vote in primaries, or someone who claims to pick based on the particular races in play each year.