I’ve always seen these guys fulfill a similar purpose as the Deathreavers in Vanilla Heroscape, albeit in a different manner : instead of swarming your enemies units to keep your units alive, you swarm YOUR units with these guys, and watch your pricey unit stay safe.
Offensively they’re nothing remarkable, although they’re solid against other common squads. But come on, you’re not bringing these guys so that they can shoot people. Even 1 squad of these guys can save some valuable wounds on Punisher, Cable, any big ranges damage dealer.
I think a Lawmen build is actually pretty underwhelming with these guys, most of the Lawmen are lowish cost heroes, and a few powers from that group only affects Unique Heroes.