Excellent post, Harold. Too often, trainers see themselves as purveyors of knowledge, and forget to address their own learning journey. You know (short of the miraculous, as far as I know) if you keep pouring from a vessel without taking time to top it up, the vessel eventually runs dry and has nothing more to offer!

Also too often, they see the training events and materials they provide as being the only resource available to staff. Some even feel threatened when staff members find alternative methods of upskilling. That's too much of a burden to take on oneself/one's department. Training departments should seek, support and encourage ways for people to get in touch with other people in the organisation. Identifying potential experts/superusers who can mentor/coach other users... and providing the people thus identified with a platform for mutual support and development.

I would add to your last list that trainers should be on the alert to spot and nurture this kind of potential.