It should protect your equipment and score streaks from emp too. As of right now its really a pointless perk. Buffing it would make it contend with toughness and fast hands. I can honestly say I've seen one person ever using the perk.
it shouldn't protect your equipment, shock charges are annoying enough, it should however protect scorestreaks (sentry/dragonfire + AGR).
Of course then you could do something like make blind eye counter the sentry/AGR (thus buffing 2 perks at once), and making manually controlling them more useful (I mean who manually controls a sentry gun, why would you? apart from the challenge I mean).
f*** the guardian though, that shouldn't be protected as its usually used for camping as opposed to locking down objectives. --- All Things Require Sacrifice.