It is an anti-air mech, it was never made for mech on mech combat. The one with missile launchers could be a decent support mech. Indirect missiles when there is no sight line, then pop in with ac's when you can see people.
is what I'm talking about. Basically harass and run while relying on friendlies to maintain locks for your lrms, and when you have your own sight line just dakka them til they are annoyed enough to look your way and shoot you in the face.
If they ever fix the head hitbox this
might be a decent quick strike splat build.