An option could be to boost a Defence other than Toughness - or to boost more than one.<br/><br/>E.g. if the electrical field screws up accurate lines of sight, targeting systems, and so on, and might also 'zap' physical projectiles passing through it, then it'd offer Parry and Dodge bonuses rather than Protection.  It's not got the *same* uses as a Protection-based physical blockage... but it could at points be much more helpful.  It would, for example, give even a totally-immobile person within it a dose of the relevant Defences.<br/><br/>And depending on what you have in mind for quite what form the field takes, I think that "I make it harder to hit" could be a better 'fit' with electrical effects than "I interpose a solid barrier": I can imagine a crackling, shifting field through which people try to target the forms they can glimpse on the far side - or individual 'bubbles' of energy, wrapped around specific targets under Amber's protection.<br/><br/>In mechanical terms, one option would just be buying Protection with an alternate effect to boost Dodge and / or Parry rather than Toughness: altering quite what something affects is just a 0-Cost modifier.  Affects Others and some sort of Ranged or Area modifier would be helpful (perhaps with the addition of Selective), as previously discussed.