Ricochet is a flat cost, not related to the effect rank. Each rank in ricochet allows you to bounce the power once - i.e. 1 rank = one bounce, two ranks = 2 bounces, etc.
With the Aura, reducing the ranks would lower the save DC, and you could add a limitation on how often it could affect a character...
Or you could make it a Complication and have it only affect people who are out of combat - increasing the danger to bystanders because they're too Entranced to get out of the way...
You are correct about Ricochet, I just re-read it. Sorry


As for the Aura, just making it NOT permanent would go a long way to reducing its affect.
And for Afflictions above I was replying about Shadow's Bolos sorry I should have said that...