The word round these parts is that Johnson turned in a draft with an apology for being 'too out there' and that the powers that be loved it and told him to run with it. Take what you will from that! I would not expect to see a direct rehash of the OT going forward.
As long as it isn't a rehash of the prequels, I'll be fine. Though it seems we're off to a great start. So glad they didn't let Hayden Crybabysen reprise his role as Anakin for the part that was cut from TFA.