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?

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

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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.

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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