@Herr: Come on. We can currently have black bars auto-cover breasts with a what, 1 second delay on live TV? And google reverse image search recognizes actors from any picture and pulls up similar ones with surprising accuracy. Now apply the computing power of shadowrun and tell me that you couldn't have a simple image/smartlinked set of contacts overly an AR icon that mirrors what your allies are doing, allowing you to have functionally normal vision, except you wouldn't have true line of sight because when it came to your pre-programmed allies they would just be real-time video. This is a really simple, but ingenious way to allow people to use AoE mana-spells. Wouldn't help with AoE indirect spells though.
@Reaver: That is what I like to refer to as "lazy" and would reflect poorly on the GM, I think. I'm not metagaming with this solution. This is based on the in-game mechanics and existing tech. The universe recognizes that mana cannot be shaped by electronic image, or they wouldn't have mage-sight goggles. Why is it hard to believe that corporate security forces would try to develop a safe-target system for their magicians? It seems like a logically consistent train of thought with in game thinking and an almost painfully obvious reason for it to have been developed.
That's not to say anyone has to allow it. But you're so much better off having someone throw a chaff grenade and totally scrambling the too-simple program to mess up the AR, or even better, veto-ing it OOC before they try to use it. Punishing a player for ingenuity creates a sterile game.