I would love to see the 74-Z on Hoth. It was technically their, but restraints of time and budget limited much of what George had wanted to do. Anothere reason why we didn't get to see the snowtroopers debark for the ground assault.
The one bummer about the craft is that it has almost always been portrayed in games as a sort of landspeeder when actually it has a flight ceiling of 25 meters (about 82 feet). Not to mention it can reach speeds of 500 kph (about 310 mph). It's usually to slow in the games.
Artificial intelligence is no match for natural stupidity.