Hmm... this may be one of those odd corner cases, but Aura and Unarmed damage should stack. Technically speaking, this should impact PL caps as well... so if you have a character with a +6 strength bonus and a +6 Aura, they should be capped at a +8 unarmed bonus if they're PL 10. Is this a possible thing to implement? I'm not certain where to find unarmed damage to make Aura add to it.