Let me give a few counter-points...
In post 161, Old Dogs wrote:we're ultimately taking away the usefulness of D1 - this is the only day where every single slot is alive, so if we spend it knowing that we're just going to lynch the survivor then all of the interactions we'd be getting here are useless
Day 1 is also the day where town shoots itself in the proverbial foot the hardest. They are more likely to lynch one of their own than any other alignment, and they are likely to bring out a few claims along the way. Going into Night 1 with a quick lynch of an anti-town element means that no one person has presented themselves as a major threat for night killing, role-blocking, or other shenanigans. Assuming some sort of power exists in this game, Night 1 can bring a lot of information to bear for discussion on Day 2 depending on how the evening plays out and whether or not information is worth sharing. Stances can just as easily form on Day 2 based around the kill(s) and power results, and work out in such a way that we can skip any kind of random dance phase and assume a Night 0 had happened instead.
we're ensuring we never hit mafia today when town has the best majority possible over scum on D1 - even if it's unlikely to happen if town players refuse to not vote for the 3p and we dont lynch scum it's really detrimental because scum can just never bus knowing full well that no one will want to lynch them.
Scum typically only bus when their team requires it, so I wouldn't expect a full on scum bus on Day 1 in most cases.
However, Town also gets to save information based on their roles so any shot(s) tonight would be taken based on fear of a player slot, which depending on who is what role, could cause overlap if we have multiple factions. Assuming any exist, Serial Killers will be the most blind since they would literally be shooting in the dark.
the 3p very likely is important to the main gimmick of the setup, which i assume we universally have little knowledge on. i'd rather see what that connection is before lynching them in case it's useful for town
The setup has been advertised as having multiple third parties, which means that as town, we want as many gone as we can in order to remove the swing potential of the game.