Also, the HMG had a big, fat "2" in its tooltip while it was on the ground. My 3-man Pioneer squad went to recrew it. All three Pioneers crewed it and the Pioneer squad got wiped.
That's not a balance issue in itself, as it's just incorrect tooltip display,
No it's you not being aware of how the recrew mechanic works.
Grens should just get some RA bonus before vet 3. Makes no sense that the squishiest mainline squad has to wait til vet 3 for any better survivability. 5th man is too much, you would need to change the cost of the squad.