Why In The World Are We Putting Fcs On ibtisam? I'd Rather See Her With Ptl And No Sensor Upgrade At All!
Ibti With Ptl And Adv Sensors Is A Beast, though
Advanced sensors doesn't make any sense for a build with PTL. You WANT her to be stressed to get the free re-roll on offense and defense. Also, FCS gives her another chance to re-roll all her attack dice without having to take an action! This way, your actions can be used on barrel roll and focus (and also boost if you give her an engine upgrade.)
Advanced Sensors is a better fit for Ten Numb who moves toward the end of the round and pesky Ties tend to get in the way.