I would like to see NOTES have permission levels -- starting with Visibility restrictions.

For example, let's say a purchaser is the Vendor Owner of say MicroSoft.  He has contacts he can see and data he can see.  But there is a person with higher profile: a Product Manager or Executive Level and she has a meeting with people at that Vendor.  If she adds contacts to the vendor with herself as contact owner, the purchaser can't see them.  But if she adds Notes from her meeting with MicroSoft, that purchaser and everyone at their level and above can see those notes.  That is not preferred.  What is preferred is ability to restrict access of NOTES -- beginning with visibility.