I can't wait for the day when three.js gets obsoleted. That would mean that someone would have done a free and open source 3d library that is easier to use and with a better designed API. Until then, we'll keep going.
If I could make one recommendation, it would be that you publish the api of three.js in someway that could be parsed by an external tool that might want to overlay a type system - maybe autogenerated from JS docs? There's probably a tool out there already.
I know projects like GWT or LibGDX would benefit greatly from something like this, and personally while I like coding JS, I prefer my prototypes to be in JS and my final code to be in Java. (I know, heresy).
