I think that's a great idea, and it can help encourage people who are just started in showing to take a step towards showing at the breed shows. We have 'open' miniature horse shows in MN that are just as big as some of the breed shows in our area! And quite a few people bring their unregistered horses, too. If I remember correctly, an AMHR show in SD this year also had non-rated classes for 4-H and novice showers. MN also has a 4-H miniature horse program that allows any horse under 38" regardless if it has papers or not, and a large number of the horses shown are not registered. Until I saved up enough money to hardship register my rescue mare and show her at the breed shows, open shows were my only option. Getting the club going might be tough, but just stick to it and find some dedicated individuals to help you out. Your key to getting it started is advertising. Make sure to create some sort of website or Facebook page and post information about the club everywhere. Best of luck!