Years ago, I defined the town triple-threat:
*Being obvtown
*Being charismatic
*Being accurate.
You can be a god of charisma with the entire scumteam nailed, but if the town paranoia-mislynches you because they don't see you as town, then all that charisma, all that accuracy, is worthless. So, you need to be able to be obvtown in order to be good to the town. A player who has absolutely zero charisma and is absolutely trash at scumhunting can still add value to the town by being
so ridiculously obvtown
that players who're better scumhunters can, via knowing the obvtown player is town, narrow in on the solve. By pure virtue of being obvtown, even lacking the other aspects of a good scumhunter, you can make the game easier for your faction to win.
You can be godly good at obvtowning yourself and have reads that are ridiculously accurate, but if you can't convince people to follow you on those reads, then you won't be able to translate that into a win. Sometimes, being charismatic in of itself can be enough to make you a threat--even if your reads are wrong, well...wrong reads can change at any time to be right. If your wrong reads change into right reads, and you have the charisma to get people to listen to you, that is lethal.
You can be incredibly obvtown and charismatic, but if you drive the town off a cliff via having the worst reads in the game, the town will still lose. By having accurate reads, you can provide value to your team by applying the pressure where it needs to be. That read accuracy presents a credible threat to the scumteam, because even if you're only one vote--the later into the game you go, the more one vote can make a difference. One vote from an accurate player who isn't obvtown or charismatic doesn't mean much on D1...but one vote from an accurate player in lylo probably wins the town the game.
You can never rely on any one of them individually, but having one of them individually as ridiculously strong will always
help
even if it cannot be relied upon in of itself to win you the game.
And in my opinion, the best town players on-site are the ones who have the overall balance of all three traits. Not the most obvtown players in the game, not the most charismatic players in the game, not the most accurate players in the game, but the players who have the
overall highest
across all three traits. In other words, say someone is an 8/8/8 in all three; they're probably the highest threat in a game even if other players in the game are a 10/3/3, 3/10/3, 3/3/10, etc.
Just, being able to be a credible threat in any field, rather than a threat in one specific field.
It is usually doable for scum to work around a town player who's ridiculously obvtown. It is usually doable for scum to work around a town player who's absurdly charismatic. It is usually doable for scum to work around a town player with insane accuracy. The scum pretty much only have one answer to a town player who can provide all three. (AKA, the nightkill.)