If there's anything I've learned from the previous mafia game I was in, it's that clues are always right. Even if you interpret them incorrectly, they still are pointing to someone, and it's likely that your wrong interpretation is right. That's why this whole Ace vs L thing seems so bogus. I have to admit that I agree with L's argument towards using clues from the get-go, since with 20 mafia in the game, clues aren't likely to reappear in the foreseeable future and they won't be any stronger on Day 3 than they are on Day 1, there would just be more of them to talk about, and if we've skipped any analysis, it would be way easier for clues to get bogged down by a third party. This would be disastrous as it would allow a mafia family to avoid being linked to clues, essentially giving them the victory nearly for free.
You have to understand that the dynamics brought in by having two opposed mafia families make analysing clues so much more important, as those families will be looking to kill eachother, hence becoming unwilling accomplices in the town's plight. Moreover, the activity it would presumably spur would be invaluable, if not today, then tomorrow. It's also worthy to note that lynching anyone in the first couple of days is not in the town's best interest, we need to be able to discern between the different mafia camps, lest we tip the scale too far in one direction. Remeber - mafia families have 3 KP right now, but their KP will only go down if they lose 4 people. Hence, lynching a mafia hastily could potentially have a disastrous effect on the game. It's probably best to let them kill off each other for now, while gently making suggestions based on logic and science as to who they should... dispose of. Even if we do not lynch a mafia, it still works heavily against the town's favour, since it diminishes our strength as a whole.
Another thing to note is that there will be mafia running for office. A more intricate result from that is that they're unlikely to substitute bodyguards with their members if their candidate wins. Regardless of the outcome of the vote, I'd expect attempts on elected positions as soon as night one, since no one really has any substantial information this far.