Well that JK is about as bare bones as you can get. Throw some 37's on it and it would look a whole lot better, of course that's a rabbit hole of other mods to get there on a JK sport.
I'm certainly not a fan of the sloping hood and grille on the JK. I think the JK is the only Jeep (CJ/Wrangler) ever made without a center bulge in the hood. I much prefer the JL approach where the hood is mostly horizontal and the grille is mostly vertical, and they taper near the point where they meet. I don't mind the flat doors on the JK; older jeeps typically had flat doors because they were just thin metal or fiberglass, or fabric!
Not disgusting, but...IMO, the redesign effort that produced the JK was kind of phoned in. This is plainly evident when contemplating the overall aesthetic of the JL, which was a home run.