I haven't seen any Aero specific badges Asbo, and I think you've hit the nail on the head. Aero owners tend not to be badge collectors, so the market may be limited. The Centenary badge would have been nice done as above but with the Aero alongside. This badge is bigger than normal, the Centenary badge is smaller, and it offends my OCD.
I think there is a flat Aero badge bar which fits across the bottom of the grille.