So enforcer carapace has an agl cap of 45, I can see that, stormtrooper carapace has the same, same weight, better plates, etc., it works.
Carapace chestplate has a cap of 55, well, it doesn't cover as much and well, I can see that working to an extent. Then the carapace other parts (greaves, gauntlets, helmet) have no agl cap. So you could assemble a suit of 55 agl cap light carapace, with the exception of -1 head AP, +1 chest AP and 1 kg lighter to boot. The only real downside is having to make 4 different tests to get the individual parts (which is admittedly MUCH harder in the current acquisition system).