"You must be a XenForo customer to post in these forums. Ensure your account is listed here."
I didn't notice the text until I was wondering why I wasn't able to reply in some topics. I am a registered member and couldn't do anything. That's when I started searching and found the above text.
My suggestion is:
Why not have a column or row next to the Node icon to show whether an user has rights to read, write, read only or no rights? That's informative without taking space of writing in small size text, something which gets missed...