That would work awesome... if your legs were amputated.It'd be awesome if they did but I doubt Jeep will offer split folding rear seats for the JL. From what I understand the stock JK rear seats only connect on the outside edges of the bed and a split setup would require not only totally different seat design and dimensions but another set of rails and connection points for both rear seats. Possible for a new generation but I don't think enough people are looking for this feature for them to do it.
If you search around you'll see a lot of the aftermarket seats are either too wide or tall to fit in the rear of the JK (although maybe with the JL possibly being bigger it would work?). Here's someone who did a 3-seat (4 optional) split rear seating using the stock front seats. Its nicely done and adds so much more utility.