Keep the "edit" button for protected pages. Add a little icon in that tab if needed, to denote the protected nature. Offer a message on editing, varying by protection type, explaining briefly why the protection, and where to post edits and suggestions (the talk page), with a link to a longer explanation of who can edit where, how to request unprotection, how to ask for help, &c.
Ingredients:
- Extra 'protected' message in tab
- Potential extra icon
- Extra Wikimedia message on editing
Version: unspecified
Severity: normal
OS: Windows XP
Platform: PC