I'm curious if you've used Durandal. What you're describing is essentially what Durandal is. Modular framework built on knockout and require. The router in durandal works well and is one of the pieces which influenced Angular 2.0's router from what I've read. Just glancing through Rob's new framework the router also seems very similar to Durandal 2.0.
So I've actually taken a look and tried to read through Durandal's docs -- I haven't actually used it in a project though (or even kicked the tires on it in a TODO app or something)...
I found the docs really hard to follow, and they seemed really complicated (and I didn't think it should have been)... It is entirely possible (and even likely) that I didn't put in much effort. But knockout (and tools like it) hit such a sweet spot for me because they are (almost) dead-simple.
