I'm a partner at http://green-bridge.org and we've been bootstrapping our stuff for a year now. It's a tool used for over 15 years in the classroom but we only just begun to bring business aspect to it. Grmmr shows visually the grammar of English (we're slowly expanding onto other languages). We're focused just on the grammar aspect of things.
You have exactly what we were planning on building. We would love to add our shapes atop of the translations so it's easier to visualize. A lot of schools and ESL groups in colleges use our tools and they definitely will benefit from using your stuff along with our visuals.
Let me know if this is something you might be interested in.