...And what are those limitations?
Stock, mine came with 205/75R15 street tires. Basically useful for delivering the TJ from the factory to the dealership.
The stock springs caused my butt to drag over any and all obstacles past a gravel road. Especially once the rated GVW was approached.
No way to communicate, so loaded log trucks constantly tried chip shots off the side of the mountain.
The stock sway bar and end links tried very hard to keep the front axle as flat as reasonably possible under all conditions. The TJ liked to lift a tire and wave.
The stock skid plate makes an effective anchor in deep enough snow, sand and mud. And rocks of moderate size.
It takes less than one would think to perform ad hoc bodywork on the lower body between the wheel wells.
The stock rear license plate holder was custom designed by the Jeep engineers for easy removal by stout brush in the back, and for quickly destroying the front license plate.
The headlights are custom crafted to give the appearance of illumination, without actually providing sufficient illumination to navigate to the mailbox down a gravel road at dusk.
SE manual drivers get the added bonus of a light duty truck transmission that may or may not be as strong as the transmission in your average economy car, with the added bonus that even in perfect working order it shifts like a 1958 International truck.
A stock TJ has lots of opportunities for improvement. It's still way more capable than most give it credit for. Especially if you accept a little carnage during the learning process.