I’d love for it to be a framework for games, but that’s a little too ambitious, since I’m just one guy working on this in my spare time. 
The original idea was to get a web based app in which I could showcase my 3D characters on the web. (Something like your showcasev3) I think that capability is present now.
As I went along, I realised I could easily go further, and the first milestone I’m trying to achieve now is a basic GTA clone, with vehicles and simple melee combat.
I don’t currently have any plans for first person controller. I guess it could easily be implemented, especially if we didn’t care about third person characters animations while you’re in first person, but even that could be set up with some work. It’s just not a priority.
I really enjoyed your threejs-fps. We seem to be interested in similar things when it comes to three.js.