I’ll be honest, I like it without a conventional “big tank gun.” It’s unique. And a laser (tapping the micro-fusion battery in the tank) would be more optimal for a light hover vehicle – no recoil. And the idea of a tank like this being available as war surplus is really appealing from a sci fi perspective – like a futuristic T-55: past it and obsolete but still in use everywhere decades later.
Incidentally, which side used it in the Io War? The Jovian Consortium or the Terran Colonial Authority? Both of which I just made up?