Depending on the other player, Hachetmen can act like a magnet. Take a moment to remember magnets attract AND repel. People like SteelRaven are probably going to be a bit gunshy about Hatchetmen, especially in a city. If your options are to advance through a city or across the field adjacent to the city, then I'm going to do everything I can to make you dread the idea of moving into that city, where you are just asking to get mugged by these piddly little, jumpy, backslashy so & so's. I'll spend the entire set up cackling, "Hatchetman, CHOP," and telling horror stories from the forums about mech's getting chopped to peices.
Then once I've convinced you to swing wide of the city, I can engage you on open terrain, with supporting fire from a couple Hatchetmen, hiding among the buildings.
On the other hand, if you see Hatchetmen as thin skinned, gimmicky and more or less harmless, I'll use the hatchetmen to lure you into streets where my lancemates have good fields of fire.