To answer the original question:
Yes, we have several hundred moderators on the site - a mixture of Adobe employees and community volunteers. All moderators are either MVPs or Staff, but not all MVPs and Staff are moderators. We don't identify moderators by a special badge.
Moderators can perform actions on the posted content in the areas of the site they have a responsibility for (they can edit and move posts, lock topics, delete spam, etc.) but they cannot change the 'Overview' pages for a product space or post system announcements. That's the job of Community Administrators, and there are only a few of us. Except for emergency messages, all the product-related announcements are created by the Adobe Product Teams (PT), and it's entirely up to each PT as to what they choose to announce, or not. Since only one announcement is visible on the banner at a time, having too many means that most people miss out on seeing the important ones. Instead, each product space is encouraged to add links on the Overview page to FAQs, HELPX documents and Adobe Blogs, however keeping these updated is again the responsibility of each PT. Some are busy doing other things - like fixing the bugs!