If you plan to drive good roads with empty tanks to an RV campground, you're probably fine with the trailer as it comes.
If you plan to hit dirt roads to un-improved campsites with a full water tank, you will probably have to beef up the suspension.
If you will be boondocking, you're going to need ground clearance. But, at that point, your average travel trailer will pushed way past the use it was designed for. You will either be spending money to beef the trailer up, or actively shopping for a heavier trailer designed for off road use.