Remember that Pilatch is all about fun. If you think a game you're playing could be more fun with a tweak to the rules, then try it! If it goes well, email us at firstname.lastname@example.org to relay your findings. Also tell us the purpose of the rules tweak, how many players were involved, ages of the players, and any other information you think is pertinent.
You may notice that some games have optional rules. Many of those rules are a direct result of players' experiments. Make sure it's clear which optional rules you're playing with before a game starts. If we really like an optional rule, it may one day become part of the official rules for that game.
If there is any disagreement about what rules should be played, decide democratically. If the vote comes up as a tie, the owner of the Pilatch deck should make the decision.