UAVs have come a long way, and will certainly get better in the future. It is easy to see how much more capable you can create a plane that doesn't have a human pilot. UAVs don't need ejector seats, don't have to have life support equipment, don't have to worry about harming a pilot with Gforces, etc.
And, they are controlled remotely, which means that they can be jammed. However, the ability to jam communications also effects piloted aircraft. Looking into the future, it is clear that UAVs will continue to develop autonomous technology, so they can can take appropriate action when they loose communications with remote pilots.
Ultimately, a goal of the UAV program is autonomous vehicles, that have objectives specified by humans but carry out those objectives independently.