With the setup, coordinating the uninformed majority is not going to be easy. Multiple subversive roles. Unknown numbers of each role. With a starting KP of 4, we need to focus on getting one Mafia to the lynch. There is no real advantage to finding the entire scum team on Day 1 if we can't get them killed. In fact, it's more likely to be forgotten, and you tend to be wrong anyway when you try to do too much (unless Mafia really slip up hard). There is also value in withholding information. Figuring out the guilt of someone, not immediately announcing it but continuing to play the thread can help you discern the alignment of other players under scrutiny.
I would like to present
THE PLAN.
Medics should protect the players that are making sense, the ones who are truly adding to the discussion. I am certain that there are no skilled bluesnipers amongst the Mafia, which means barring any foolish blues blurting out their role to the wrong person, the Mafia will want to target the players that are steering the town in the right direction. When such a player takes a hit, the medic should immediately roleclaim to that person. That person should open claim they took a hit (this is information the Mafia already know, and it can only help town to know as well).
(Brief aside - you should ALWAYS announce that you took a hit during the night (including as Veteran). This is 99% of the time information Mafia already have (because they're the ones who did it). This is very useful information when analysing the Day post, because it can help piece together where all of the hits went that night.)
That person will then be checked. I know there are framers and millers in the game, but I'm honestly not worried about that. The medic will then get checked as well. If both check out, they will come out and serve as figureheads for the town. They will be able to coordinate blue abilities, AND act intermediates between those blues and the elected officials, keeping the blues safe if the officials are corrupt.
Bodyguards should NOT reveal themselves to the elected roles, not until one or both of them have been confirmed. The principal reason is that if one of the two officials turns out to be
Mafia, they can remove the bodyguards and kill the other official.
Detectives - I'm sorry to say it but the odds are stacked against you this game. Framers, Millers, Godfather and an errant Bus Driver are going to screw you up. Fortunately, the hosts haven't plagued you with additional problems like sanities and limits on your checks. Despite that, even with behavioural analysis, you will always have doubt behind whether or not the officials are Mafia. Thus, any plans revolving around forming a circle with the two elected roles are out of the window. You will literally be working alone until you get a working circle up on your own. No elected official is to be given any critical information, until they have been proven beyond reasonable doubt to be innocent. And for the love of god, watch who PM and do not open claim.
Medics - I've already set out what medics should be aiming to do above. You are one of the key players in finding trusted town as both you and your protectee are informed of a hit. You shouldn't have to worry about accidentally saving someone from a Vigilante hit because you should be protecting strong players that the vigilantes have no reason to hit. Only a bus driver can cause potential problems, but I will get onto that later.
Vigilantes - Mafia have no way of protecting amongst themselves. Because of this, I believe a Vigilante can safely publicly announce their hit before they carry it out. You only get one hit so after using it, it won't be such a blow to town if you proceed to die. BUT, fear not, for I have another plan. Some of you may have noticed me debating with Kayla the importance of knowing if Mafia have to send in hits individually (the case for TBT Mafia I and II), or if one person can send in all the hits. Now that I know I am town aligned, I want to explain this - if one of the scum team can be online right up until the Night deadline, they can make last minute changes to their hitlist before sending it in.
Remember that actions cannot be changed or withdrawn once they are sent in. If individual Mafiosi have to send in their hits, they will likely have to send them long before the deadline due to sleep/school or whatever schedule. Why is this important? Because if Vigilantes announce who they will shoot just before the night ends, and sends in their action, it is more likely that Mafia will not be able to respond in time. When Day comes and we see that the person they claimed to have killed is dead, and
all other KP have been accounted for, we can say it is reasonably certain that they are a real Vigilante. Sheriff can then protect him for two phases, while the town circle builds around him.
Additionally, by publicly announcing a hit, this will also reduce the risk of medics saving that hit by accident.
Mafia could claim Vigilante and say they are going to hit X to try and gain cred or keep a medic off X, but this will be seen as suspicious as a real Vig shouldn't be targetting that person unless he is a prime suspect. And with all these roleclaims, we will soon realise that there are more claims than realistically possible, and all those vigi-claimers will be put under suspicion. If the Mafia kill the Vigs after they hit their targets, it also makes it riskier and more difficult for them to roleclaim Vig themselves. We also do not want intended incarcerations of suspected Mafia to fail because of a Vig hit, and vice versa. Thus once we have a confirmed innocent, all Vigs should also tell that innocent person who they will hit, who will then relay it to the Sheriff, whilst protecting the identity of the Vigs.
Bus Driver - You will be a headache to someone this game, and I intend for it to be the scum team. I urge you to stay your hand until the analysis and information really starts paint a clear picture and there is a channel for you to coordinate with town. Ambitious as it may be, I am confident that we will be able to use you to turn a Mafia kill around on itself. That would be the ultimate form of humiliation for the scum.
Mad Hatter - There's not much I can really say to you. Like all blues, post as if you're a green. Bomb those #3 or #4 suspected players. I will have to trust your judgement on this - you are essentially playing on your own.
Assassins - Hello. Quite frankly I don't care about your little game. However, it is in your best interests to cooperate and work together with us. You are far more likely to be killed by Mafia, so you should assist us in neutralising them. I am also sure we can come to an information exchange agreement.
Learning experiences! 
