This is not an attempt to get them added, I just had a thought on how they could have worked differently in games in general and figured I'd put it up for discussion... When you build a shield generator it should have a slide rule that allows you to adjust the size of the shield so that you can make it cover the entire base. no matter how big you make it it still has the same defensive value. this avoids the need for spamming shields to protect increasing larger bases against larger armies in end game. - saves on build space and gpu usage. then add a method to increase the defensive power of the shields, either make it so any new shield within the primary shield area just adds its extra defensive value into the shield they are within, make shield strength linked to time in operation - indefinitely increasing, (would encourage harassing to keep it down) or purely determined by how much energy you choose to power it with. as a final point, make them work both ways. once a shield is up, nothing goes in or out, no matter what team it is on. makes them more tactical - you cant just sit behind shields shooting out during an attack, you have to get out there and counter attack. probably allow allied troops a way out for ease of gameplay, eg a gate/tunnel. - the gate could also be a weak point in your defenses so creating further tactical possibilities - shield too strong, rush the gate, get in a blow up the shield, then send in the bombers.