I have been using Trello for a little while now, and I love it. However, there are things that I wish we could do (please let me know if we actually can do any of these):
things of that nature should be available to board administrators.
@Dalal Al-Abdullah you could use the Observer role, which is available on Premium plans! This allows members to be able to view cards and comment on them, but not edit them (they wouldn't be able to do anything you've specified on that list)
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