Trusted/senior users (narrow focus)
I do agree it's desirable, but I think we have to accept this as something we educate, not something we can at present demand.
A mini tutorial/quiz on joining might be nice, of the form "Have you taken our new users' quiz? It takes 30 minutes and will help you be a great editor!", with a short description and a mini quiz (with explanations of wrong answers) at the end. But I don't think compulsory will be workable nor a major recommendation. Note it under "Interface and wizards" maybe.
Main reasons why I don't think the forcible approach suggested is so workable:
- Ability to hide an IP should not be linked to quality of editing. Orthogonal issues (one doesn't influence the other). Big reason
- The result won't be editors compelled to learn. It'll be most readers being annoyed, and a lot turning to mini-websites "How to pass the Wikipedia Quiz".
- We want people to edit well in practice, not just know answers in pure theory (minor, theory certainly can't hurt, but not sure testing theoretical know-how will help).
- Reward's better at motivating genuine learning ("if you learn these and show it in your editing you get recognition" may trump the bleaker "pass this quiz or you can't edit" as a genuine motivator)
If there's a separate idea about "requirements for new editors to edit", can you start a new thread on it, and keep this one on its headline topic :)