SharePoint Learning Resources

I've been a SharePoint Trainer for 15 years, and have created lots of custom materials. I'm assessing whether there is a gap in SharePoint learning resources that I can fill. I've found lots of how-to articles, but few why-to (or why-not-to), best practices, and a lack of site creation support from IA to launch. Am I missing something, or is something missing from the marketplace?

Would you like to read a why-to and best practices book for no-code sites that provide high business value? 

Would you be interested in a subscription to a help centre to outsource your in-house training? Is your key audience end users (how to find & follow things, navigate libraries, etc.), content contributors (best practices for documents/pages), site owners (site design, structured content presentation), or your corporate trainers (train the trainers)? How many end users or site developers would you anticipate licensing?

Are you a site owner, corporate trainer, or other role?

What pain points are you facing that you would love new resources for? 

Thank you,
Carole