I just chatted with my friend who produces billet stuff, and he says this is a perfectly feasible item for him. He figures the final price would be about $200/set on emblems like these.
We'll probably start working on prototypes pretty soon; I'll be donating my stock emblems for the cause. And just FYI, these items are all produced by us - not overseas - and are hand-finished. We're talking very meticulous attention to detail.
BTW, my friend is also a professional powder coater and he let me know that anodizing would not be a reasonable option for any exterior piece because of a lack of UV resistance. He suggests powder coating as the best option. Plus it'll look better
I won't reveal any other items we're brainstorming on, but we've got a few ideas that should do very well.