How long until the gun is tracking with the tank commanders eyes ? That's old Apache technology that could be brought into play with the tank commander literally guiding the weapon with his eyes.
OF course a magnify function would be pretty handy to put the round right on target.
Gun tubes can do damage, especially to buses. I would probably have gotten away with it if I had been on the tank trail instead of the hard ball.
Can't use the AH-64 set-up. The Apache uses a closed cockpit where infared sensors track the helmet. It would be difficult to use this system in a tank/AFV. A different system is under R&D, but since the idea is to fight more 'buttoned up' we would not need it. A slew-to-cue system where a scout finds targest and hands them to the tank or an intelligent targeting system (targets anything not sending IFF as friendly and lets the gunner select his target) may be better. There are several other systems like a VR gunnery station or flatscreen tough panels. The list is actually open ended now and "Star Trekish" ideas are actually being researched and developed into usefull items.