Well, I'm stuck between a couple choices. But I'm gonna give my vote to #3 by @welshstacker. The design may need a bit of tweaking but I like the concept!
I like no.7 a lot, and would buy it today if I could, but I'm not sure how I feel about it with the obverse we have. Awesome design though.
no.2 would make a sweet 2oz or 5oz collarless antiqued round. It really would be an amazing thing!