Probably also improved reliability and reduced fuel consumption.Supercruise, improved maneuverability via TVC and maybe increased stealthiness with new nozzles.
Weibo@沉默的山羊The J-20 pilot said in an interview with CCTV,
"I don't know if you have noticed that our mission to Zhuhai is extremely simplified in personnel and equipment. All the work after landing and before takeoff can be completed with only two people and one vehicle. This is the requirement for personnel and equipment in the newest combat style."
The ground support procedures of the J-20 will not be more than those of other aircraft, and may be more simplified. This support mode is also needed for our daily training. It has been applied and tested in major tasks in recent years, and meets the needs of modern warfare. It is mainly to ensure that the task unit can quickly push forward to the area we need in an emergency, and improve the battlefield emergency response capability.歼20的地面保障程序相比其他飞机不但不会更多,可能还会更精简。这种保障模式也是我们日常训练所需要的,在近几年的大项任务中经过了历练和检验,适应了现代化战争的需求。主要是保证任务分队在紧急情况下能够快速地前推到我们所需要的地域,提高了战场应急应变能力。