I have found a special exception concerning Quad Battle Armor and Manipulators that should likely be solved with Quirk Fine Manipulators (see p84 BMM).
Current rules do not allow Quad BA to have any type of manipulator (unlike 'Mechs and Vehicles), putting them in the same situation as Quad Mechs were in before Fine Manipulator Quirk was created. This likely slipped through because BMM is a Mech only book.
I suggest errata for allowing BA to apply that quirk, as it would eliminate a special exception and create a more consistent framework.
