Ironically, the 1A1 would probably be pretty interesting in the HBS game, given that support weapons (which Small Lasers are classified under) automatically fire after a melee attack. No-one is gonna enjoy an Assault Mech moving that fast into melee range, which should help remind people what Tabletop rules the 1A1 was originally designed to take advantage of (CHARGE!).
The OA/RA was building the -1A9 in 3085. After that is anyone's guess though