It sounds like you already have everything all figured out completely and soundly for a high priced private system. Some of us responded from viewpoint of what an average single domainer might want. I now see that is not what you wanted, and apologize for misunderstanding your request.
But I am still unclear what you were hoping to learn from the post to NamePros.
Fair answer. However it's not exactly like that, there are still plenty of reason for the post.
See, when you work on something that has multiple applications / usage cases, you need to focus. And we still venture into the unknown, it's not firm ground for us.
The single domainer answers, although expected, are important as well. Confirmation if you want, of a potential path to keep in sight. Some of the ideas actually came from a similar post elsewhere. Anyway - although I said no to low cost accounts (note, at this stage), there is a strong chance we might actually issue something for single domainers in the future, just as you suggested. So I'm saying no, but it doesn't mean you don't have a valid answer above. It might seem contradictory but it's not.
Feedback is always important. You can prioritize things. I often come back and re-read such posts and find additional key information. You have to build things for solving people's needs. Who knows, maybe at some point we will be able to do that, just as you suggested. In fact, right now we are exploring several options outside of anything posted in this thread, and the end result might be tremendously useful to single domainers. Such as a very fancy keyword generator that helps spot valuable, either expired or unused domains.
The most important part is cons. That's what you look for when posting.
You think you've made your homework and figured it out. That until someone rings your bell with an issue you never think of. So positive criticism is extremely important. I don't feel we have all answers at this stage although some of the answers are here to stay.
Maybe this makes things a bit more clear. Any answer is appreciated even if it seems it's not bringing much (it just seems so).
Warm thanks for all comments!