These "new" designer dog breeds are only glorified mutts. That run a pretty penny. I say go for it. I know this is going to get me in trouble but I'm going to hit submit anyway
They're mutts with good PR professionals marketing their brands.

As for diversifying/modifying flocks, I could seriously get into ducks. I love the chooks dearly (and so do my egg customers), but the ducks rock. They're the funniest, most personable, most charming little things around, and I'm glad I got them!