As the Nova makes its core rulebook debut in IO(:AE), it has no column on the ECM/Stealth Modifier Table on TO:AR p. 191. Should one use the Angel/NullSig column*, the VoidSig column, or use a unique set of modifiers?
*I should note for consideration that using the Angel/NullSig column would mean that the modifiers are redundant in the case of the Cephalus, though admittedly to call that particular example an edge-case in 'Mech design is an understatement.
EDIT: Also, what should be used as the equivalent (or failing that, the new values) for the Nova's Active Probe component?