Here's a question - if there is a notice at the top for new members when they join about where to go to introduce themselves (Meet and Greet) and where to come for forum issues or the like (Community Square), why then should those sections be at the top for everyone? Because to my understanding such a notice already exists!
Meet and Greet really is primarily for new members rather than everyone (on average here, regardless of if you are a regular of that section or not), for instance, so something "at the top" should really only be for them than your usual forum member... and that's served by notices. Once you're around a bit you then know where to go if you do say need to post about an issue about the forum, or if you want to welcome new members.