Since you mentioned it, I don't see any head armor (or IS for that matter) on any of these designs... what tool are you using?
On to the 'mechs!
I like that AC/2 Rifleman... that's been rattling around the back of my brain for weeks now.
The Crusader is only missing symmetry... put all the LRM ammo in the CT and the SRM ammo in the head.
The WVR is hilarious... you only moved the weapons to encourage the thing to overheat instead of alternating punches with weapons fire.
As for the Shadow Hawk, I can only say:
YESSSSSSSSSS!On second thought, the soundtrack for that thing could be from
Stranger Things (26:44 in particular on that track)...