I dont get it, did I miss something?
who would trade a 3 dice attack to prevent 1 opponents ship from modding 1 attack? and whats worse is it only works at range 1. it also only benefits ships with upgrade scrambler equiped. and you choose the scrambled ship during planning phase. so you are guessing which ship will attack you at range 1 and instead of trying to prevent this, you give up your attack and let it happen? why?
so in summary...
you build a squad with this upgrade.
you decide not to attack
you also plan on letting someone attack you at range 1 and make no efforts to reposition or alter this outcome
you are attacked at range 1
you yell "gotchya sucker!" then explode.
i mean unless this is designed to protect bomb dropping ships from arc-dodgers (which is horrifyingly off-base) what is it good for?