I like the concept of the Gun, but have not had a chance to try it out yet. Unfortunately,
the only way I can see a Gun being used effectively is in my own "Kill Team" style units:
Treat infantry and their transport as a single unit. This means your Lance of Guns will also
be carrying a squad of Battle Armor each. Add in two Vehicles to the Lance. Deploy in trios,
so you have 2 Guns(and their infantry), and a vehicle attacking one point, and the same
going somewhere else. Or you have 3 Guns and their infantry in one place, 2 vehicles, a Gun
and infantry hitting another. (This idea was inspired by a misreading a while back that the
FedCom was fielding 3 'mech strike teams, and was originally created as a response to that
idea WELL before I found out ComStar/WoB used units in increments of 6)