Sounds cool. I really really like interactive fiction (especially as a web medium these days), but I find the mainstream interactive fiction community (centered around Inform and the ifcomps) to be extremely arrogant, offputting, bigoted, and elitist lol.

I had started some work on something similar in Java, planning to run it on GWT and Google AppEngine, but like most of my projects it lost steam and I never got very far with it. >_> Heh.

Emily Short did something sort of similar with Twine. Have you ever looked at it? It's very CYOA, and based on my limited messing around with it, it doesn't seem to track the world state very much, just follows plot trees around.

I really like the idea of an IF with a CYOA sort of presentation, but a complex world-model (ala Infocom) internally, but mouse-driven instead of the oldskool GET LAMP, EAT LAMP syntax, hehe.

I am very curious to see what you come up with! :D Let me know if you need anyone to help with testing.