Aside from Teancum and me, none of the authors of maps in the Conversion Pack are active anymore. Era's around sometimes, and he did Methlyn, but that's it.

As far as using the Conversion Pack as an example, I wouldn't recommend it. It's a great mod with a ton of content, but it had an incredibly protracted development cycle with a lot of patchwork fixes. It's really sloppy in a lot of places and is really feature-bloated. It's a project that built on its own inertia until it got out-of-control, which Tean learned early and I learned late. It stumbled its way into being successful by a combination of a legacy with the community (Tean had built up popularity for the mod for a couple years already) and sheer volume of content. If you really want to learn something, you can learn the most from this mod by simply reading the forum for the mod - what it's done best has been community management.