Agreed shields are good but they don't stop Coms or units. Few T1 Coms are going to walk into 2 x UEF unshielded PD and never 3 PD, yet 3 x Cybran T2 PD under shield and enemy didn't even bother the OC them...just walked on past....no deterrent at all which is the point of PD...building 5 T2 PD seems overkill...
All I am saying is a Cybran Stealth Gun Com + 3 X T2 PD + T1 PD + Shield could not stop 1 Com....seems like a balance issue to me. Happy for the balance group to decide, just thought I would show an example of the issue....