I think this sounds like a great idea, and the first thing I thought of was "oooh maybe we won't have to wait a year for the KittyCats Birthday Hunt " to have a hunt showcasing the secondary markets
(I like to go on hunts LOL)
Another idea that might be cool, as a breeder that spends a lot of time trying to find the newer traits when my starters don't cooperate, would be something like Kitty Kottage used to do, Trait of the Month I think they called it. Something like that for hot new traits, like Dreamy Tail...where for a limited time shop owners in the co-op could have a landmark to their Dreamy Tailed cats, and the SLurls to all the locations at all the markets would be on a website or notecard for buyers to hop from place to place. This would be labor intensive to implement ..and would need to require breeders to somehow feedback when they have no more dreamy tails so buyers don't get frustrated going to places that do not have the advertised tail...hmmm definite pros and cons to this concept...well just an idea! Something on my wish list when I am doing "Area Search" looking forlornly for that special trait
I look forward to seeing the collaboration and what changes may come ....