Let's be honest - The Flash's first two seasons were pretty perfect, so there's not a whole lot I would change, making journals kind of pointless. The only real change I would make is have the first season build towards the formation of the Rogues, which I intend to feature as the villains of the first crossover. So, instead of weekly metas, it'd be a new member of the Rogues. In the second season, Earth-2 Harry Wells would be called Johnny Quick. Oh, and S.T.A.R. Labs would still be functioning, just with a portion of it quarantined after the explosion, where the Flash Family operates. This means no basement prison, with the Pipeline instead being an A.R.G.U.S. holding facility designed for metas.