Apparently T99A can reverse at ~40km which is same as M1A2 but worse than T14 which can reportedly reverse equally fast as it goes forward.Entire tank designed around APS seems appropriate since APS is an optional upgrade to basically any tank.
Hybrid or full electric propulsion should be the defining feature of next gen tank. Reliability and logistic/supply chain demands might make this a questionable thing though. I mean you can transport diesel quite easily, you can't easily transport massive generators everywhere AND the diesel to power them. You also would need charging stations to move with your ground forces. How do you design charging stations to be survivable etc.
Unmanned turret is a nice to have especially wrt crew survival against top attack munitions. It still doesn't guarantee crew. So I'd say this one is optional. A really thick hull necessary for unmanned turret can be a mobility constraint for urban environments.
You can integrate UAV and UGV now with any tank. Having a dedicated ground up designed nesting area for a UAV is just really not that necessary. UAVs are already very well integrated with PLA ground forces and every aspect of warfare. Making the tank have a charging station and landing spot for a dedicated small recon drone is a bit redundant when the force is highly networked and there is no real benefit in individual platform having this own use small UAV. You can simply have a UAV stored inside with the crew to be released by crew when needed. That's a much better engineering solution to the "problem" already.
Everything else current generation tanks have and next gen should have.
The thing that really should separate the generations is the adoption of newer technologies that present as advantages overall. In this list, it would only potentially be the new drivetrain. The advantage of massive torque, much simple drivetrains compared to internal combustion, much easier and quicker to manufacture, lighter, smaller, fewer parts and easier to service and repair. Downside to EV MBTs is the logistics.
Something as simple as that actually helps vastly as it means the tank becomes survivable against infantry. At least javelin is shown to be not as good as advertised, with T72s often surviving frontal hits, it's likely the top down attack only rarely works. But the problem of a T72 or even T90 is that their reverse speed is like molasses, meaning the crew must present the rear to get out fast, and even a shitty rpg can destroy it from behind.