reducing to two crew is a bad idea, even with AI. because there will be instances where at least one crew will have to dismount, possibly under fire. even if you have AI still better to have a third crew in the vehicle.I think that the AI not only will solve the targets (IE actually shooting at them and/or automatically correcting failed shots). I think that the AI through fusing information coming from a multitude of sensors will also serve as the primary spotter for the crew, it will detect possible targets, pass them to the commander for positive identification and selection of ammunition to shoot and then the commander will hand them back to the "gunner AI" to engage them.
This capabilities will provide a leap in efficiency compared to the current "hunter-killer" methods. However these functions are not incompatible for a 3 man crew (T-14 either has them now or will be able to have them in the future) but the benefit of a 2 man design will come at a decreased tank weight while maintaining the same or comparable protection levels and achieving a superior fighting performance to a traditional 3-4 crewman tanks (without AI) or slightly inferior or comparable performance to a bigger crew enhanced by AI.