I'm digging these, especially the Norton one. 3 dimensional badges look way better than vinyl or painted on logos IMO.
Here's an idea - it would be cool if you could layer the piece in such a way that the base of the emblem would fit into the stock badge indentation and use the stock (or slightly longer) emblem screws but have a completely differently design for the top layer. I know that it's probably a lot of work compared to just filling in the emblem indentation and gluing the emblem on but it might be nice for people who don't want to do bodywork on a nice stock tank. I bet a triumph style badge like below would look cool using this method. I'd definitely buy a set at least.