Ford doesn't allow much in the way of available options outside of what is in the group packages. My wife's Limited has more options on it than my Sport, but the Sport has the Twin Turbo and a few cosmetic differences. Most of the options that came in the package with the Limited, are not even available in the Sport, at any price. I believe that Ford Marketing has set up the various Explorer models in such a way, that you have to upgrade models in order to get what you want, ending with the Platinum, that has all the available options, at a very steep price. If you go for the Platinum, since almost everything is standard equipment, you might find that you are buying options that you don't want. If I had to guess, it might be that they have standardized the cars to the point that it allows them to produce cars at a faster rate.
I find that the handling of the Sport is identical to the Limited, with the class III trailer towing package. Having driven the 2016 Sport, and comparing it to the 2016 Interceptor package, in my opinion, they are virtually identical cars in power and handling. The Interceptor doesn't have any of the bells and whistles, but it is less than half the price of the Sport. Ford hit a home run with the Interceptor, and I think that in a couple of years, it will become as popular as the old Crown Vic Interceptors were.
