Slate, I checked out your system and I have to say that I’m incredibly impressed. You did an outstanding job. Your system feels very similar to the Ben system, and all monosyllabic too. Also, something I’m particularly excited about is how easily many of my current image-phoneme pairs could transfer over. If I wanted to, within a week I could have a working 3-digit system, along with a 512 binary system. No cards, though. For that I would have to use a 52-image system.
This has given me a lot to think about.