"They'll rebrand themselves as the people's party and press for an early General Election"
I'm not sure about that. I doubt many of the Leave campaigners had any plans beyond the referendum except "magic happens".
I'm not surprised, BTW, that the leading Leave Conservatives wrote to Cameron just before the event saying that he should stay on whatever happened. They belatedly realised they hadn't a clue what to do if they won & wanted someone to come along and look after them. Who do they have in their own ranks? IDS who has presided over the on-going car crash of Universal Credit? Gove who seems to have got up the nose of everyone working in the areas he's overseen as a minister? Boris, who was the great cheer-leader of the City that may currently be doing nicely (in the short term they can always make money) but are in for bleak times in the longer run? No wonder Boris is going round saying that they don't have to invoke Article 50 any time soon. Well, they and Farage have now got what they asked for and I doubt they're going to enjoy it for long.