It actually looks somewhat regular instead of random in the end. Perhaps having only rule 6 and 3, no others, is interesting. Or 6, 3 and 1. Or only rule 3 and

It actually looks somewhat regular instead of random in the end. Perhaps having only rule 6 and 3, no others, is interesting. Or 6, 3 and 1. Or only rule 3 and take solution with highest entropy