I like this as a fix for the Sabutai. And yeah, the Delta is going to be on the receiving end of a lot of grief. There are plenty of fighters that are going to be suffering from Critical Existence Failure if they stray in front of it. One other thing to watch out for are some of the sub-capital missile bays floating around these days - that makes having two AMS bays very handy since it doubles the number of salvos the squadron can blunt per round. (Note that fighter squadrons only fire their AMS bays once per turn.)