I don't see anything here I couldn't do myself, and in a more secure way. I don't trust handling of my DNS to random projects.
If you would let me know if there is anything what you don't like, then I'm happy to fix it or whatever :)
I would only consider this useful if you posted your code on github so that people can run it on their own DNS servers.
I also have a more serious project regarding DNS, even with an anycasted network, dnssec, etc - but that is still in beta and I just wanted to do something for fun (Idea came while I was implementing a zonefile importer)