I'm wondering if there's a practical demand for some sort of training classes. I would think that Autodesk would be interested in putting something together (and they have the resources) for their users like you.
If there's still a void, I'm wondering if that's something I should put together for folks. I'm an AUD specialist / developer in San Diego, CA and have serviced a lot of utilities over the years. I go way back with the product when I worked for Autodesk and back to the Gentry Systems days when it was UDS. Now I'm just a small third party developer specializing in utilities who use AUD and/or AutoCAD Map.
Anyway, Autodesk would still be the first people to ask to create a training class. If there's a demand for it & it could be profitable, I would imagine they'd be up for it. If not, let me know if you have ideas for what you'd like in a training class - maybe it's something I could help get started.