I am thinking of trading in or selling my 2017 and get a 2019. I almost did not buy a 2017 because of lack of a back window that opens. But I pulled the trigger and bought it anyway. Love the truck but still hate not having a back window to open. Did they make any improvements like the back doors opening wider or accessory ports staying on when the truck is off? Is the 2019 so different that it will make me want it? Maybe wait till 2020?