For those requesting diffuser "blades" , here you go.
We had these blades made in addition to the diffuser to get the basic look. We installed these on a diffuser (using 3m tape), and are going to get feedback. If people out there like the look, we can then offer a rear diffuser with 4 blades "bonded" into the part - so they'll be part of the rear diffuser.
What do you think?