My problem with it is this. With so little ammo and so few tubes, what purpose does it serve?
Your squad of 6 high tech infantry fires a salvo of 12 missiles, 4 times. It hits with half the salvos and half the missiles hit with those salvos. That's 12 damage, total. You can't kill a scorpion with that even if every missile hit the rear armour. Now sure, you can deploy more but it's a very expensive way to get a small amount of missiles down range. A single Striker light tank has as many tubes as 5 WilliNilliGhillie, 3 times the ammo, better speed and a sizable close range weapon in the SRM 6. This suit has too much defense/mobility/range and not enough punch/purpose.
There's a bunch of things that could be done to help with this but I think removing 2 points of armour for, what, 7 more salvoes of missiles. Would be a good place to start.
Personally I'd remove 3 points of armour and the APWM and add 6 salvoes and an LMG (rough in my head maths) which would give them a significant secondary weapon, enough primary ammo to keep shooting a lot longer and actually kill a target and the ability to effectively rip through PBI. They'd still shrug of an ML hit per suit and have the stealth and the move speed to avoid a lot of fire but be enough of a threat to actually warrant shooting at.
