I realized it's been ages since I updated on what my little pond has become. I'm very happy with it. I've continued with the native landscaping around it. I'm still figuring out what marginal plants work where and what will come back after the winter, but every summer it is full of life. I have about 25 good sized goldfish, some of which are probably reaching their maximum size.
This summer I added 3 golden orfes in an effort to do some population control. I think it's working, I no longer see clouds of baby rosy red minnows.
I'll start another showcase soon as I built a rain garden in the yard and connected the pond overflow to that (plus water from my downspouts).