I think it'd be harder to consider scrogging an advanced technique considering it's just pruning and training, something any basic grower of any plant should know about.

The method I'm proposing makes it easier for categorization. Even n00bs can learn how to do a scrog or an aero grow the first time. We just need to present the information in an appropriately-structured format. Beginner, Intermediate, and Advanced are too generic and too overly broad to properly encompass the most common techniques and materials, IMHO. Kinda looking at it from a database perspective, and taking into account how most people might try searching the forums for relevant information.