I haven't been here long enough to know if this is a good idea or not. I wouldn't know what the proper intervals would be for Tin, Bronze, etc.
But I think it is something I'd like to aim for. It would be for 18 holes, not 9.
I think it's a pretty good idea, but it would be a little bit harder if it was consecutive holes without a bogey.
Tin being 9... Diamond being 180... Or something like that.
TLD - i agree - good one