That sounds like a terrible idea that only the jQuery and npm people think is Ok. What if someone wants to host on their own domain and servers and review code with reviewboard? What about people using Bitbucket or other free source code repo hosts?
Reading web mags like DailyJS and Smashing magazines are probably a vastly superior way to know about high quality jQuery plugins. These mags are like the academics journals, if your plugin gets published, there's a shallower limit to how terrible it can be.
I think it's more important for jQuery to provide a more flexible module/plugin system that jQuery itself is built on. Many people are actually asking for easier ways to have their own customized jQuery builds. There are ways you can do it now, but they are pretty involved. This is one area I'd definitely like to see jQuery improve on.