One of my players asked about stacking defender aura with the rouge at will that lets you attack back if they attack you...
Looks like I'm sending another email. I forgot to mention I thought gaining a permanent at-will aura seemed . . . cheesy. I know we discussed it a bit on here and it's not super great, but I just don't like it. If you're a fighter not MC'd into anything already, why not? Added penalties (granted it remains aura 1 forever).