Yesterday I released Adder, and announced it on Hacker News, Reddit, and comp.lang.lisp. It's gotten some positive response, not a lot.
The next step, I think, is to try building something real with Adder. So far I've done small samples, but I won't know where the pain points are until I really dig in. I think I'll start with the HTML generation framework (see also the sample program), and work up a simple Web app. That should give me enough experience to flesh out the to-do list a bit.