Are you familiar with the triplicate setup? link
Even if people have to vote within their own group, as mafia, it is ridiculously easy to convince people not to vote you, as there is absolutely no information to go off. It will become a lot easier for scum if you let others decide for the group. In practice, most games will be over after phase 1 with a mafia win. A phase 1 town win is going to be super rare. In the final day, scumbuddies probably might be able to distance. Bussing in phase 1 is suboptimal.
I also don't see the fun factor increase from triplicate, where there is always room to analyse previous days' wrongdoings.