It's currently a WIP, as there are literally too many models in Portal 2. I'm just putting it out there that I am working on one. I'm also open to some suggestions on what you'd like to see in it. Currently i'm just categorizing it by directory, but I know I need to and will do more sorting (via visgroups). Also, if there are any additional things you'd like to see, like setups that are pre-working that involve models.