I liked Alexander. I liked Jake, too, but was less keen on Leanne.
I never warmed to Frankie, and whilst Charlotte played a very good game, tI'm not keen on people who can be ruthless towards friends in that way. I know it's a game, but all the same, it puts me off them.
We can't know who is a Traitor at the end, as that's the point - if there is one they take all the money. When both Charlotte and Franke had gone, the others really didn't know if there was a Traitor left, so kept going with the banishments. Under the old rules, Charlotte, Frankie and Alexander would have had to declare their status when they left (if I remember rightly).