Limiting menu management

I am creating a website with Drupal 6.x that will have several content editors and several menus. I would like to somehow lock down their ability to add a piece of content as a top level navigation item. Is there a way to accomplish this?

Additionally, are there any modules th开发者_JAVA百科at make the menu drop down in the content creation page a bit more user friendly?

The menu settings per content type module allows you to determine which content types may be added to each of your menus.

Are you sure you want to use the menu system? It's possible that you can use the views module to get something more flexible.

I have found several modules which look helpful for enhancing the menu system:

http://drupal.org/project/menu_editor
http://drupalmodules.com/module/menu-weight-assist
http://drupalmodules.com/module/ez-menu
http://drupalmodules.com/module/better-menu