I`m not totally across the point your trying to make but speaking for myself, I dont want to revisit the seventies as the experience was perfect the first time around but I also dont want to sit through a rehash of that period which through terrible writing, cheapens that best part of that creation simply to artificially make the current inferior protagonists seem more relevant. As mentioned previously, there is great hope that the GOT boys will indeed come up with some new original ideas that can rival what has been seen by other production houses as they will be "free from the past".
As for the poster fiasco, it is reasonable to not lay blame at the feet of Kennedy but as the old saying goes, the fish rots from the head down and the poster is just the latest highlight of a string of poor decisions and perception is everything. Take the as yet unmentioned here social media underling who has a poster with a cross over the the face of the franchises greatest hero on his work station and his response to its public airing. Not a big deal maybe but unthinkable in the Lucas era. A far more successful, stable era I might add.