It’s disappointing to me that electromanipulation can’t really enhance your initiative. While your GM could reasonably allow you to buy heightened reflexes, the only other help for your initiative is if your cunning initiative is lower than your dexterity initiative. I thing EM3 Enhancement should be able to supercharge your nervous system to boost your initiative or maybe flip you to use the higher of dex or cunning initiative like the Talent gift. I don’t think it needs to be able to affect dexterity because that’s more than reflexes, but certainly your reaction time.