Suggest you specialize in one or two cheeses and perfect them. When you’re the best, people seek you out.
I’m pretty sure the FDA rules were brought about by lobbying efforts by the dairy industry. I’m not discounting the possibility of bacterial issues; but by using a dairy that is conscientious about cleanliness, those issues disappear.
As far as demand, I find that here people go in cycles. They don’t always want the same thing - which is understandable. Also, they seem to like additives. Peppers, of course; but bacon bits or diced ham are popular around here.