Years ago, EM was all open setups all the time. It brings a different dynamic to the game. The scum and the town know what can/cannot be claimed. In a way, open setups were more "pure". The scum and the town did a dance at times over "who should claim first?" When you had two people counter claiming, they would reach back into the previous days and point to evidence as to why
they
were actually the PR. It was quite fun, and it's a different type of game compared to when everything is hidden.
I miss it, if you want me to be honest. I miss it dearly.