The U.S Army Future Combat Systems 40t Prototype Tank
Great video on new prototype tanks being developed, including a very low profile 2 man 40 ton tank and one with plastic composite armor that could be
parachuted into combat.
I think being inside a tank and relying just on computer screens to see what you are doing would be difficult to get used to.
Also in the video the normal position is to have your head just outside the tank body, making it a good target and meaning dust and rain would become
an issue, as well as noise from the gun going off just above their heads.