Well, since the Intranet module was never created for 4.0 (if you look at ArsDigita's plans, and Intranet is pretty much a complete re-write) I had been planning on building a Intranet based on the Arsdigita setup, but with our own enhacements. I just haven't had time to start the module, like I did for 3.4. So how do we want to do this? ;)
