This happens more often than most people realize. However not all of these new sites get covered by perl.com

Can someone come up with an idea that will provide some central management

The underlying fallacy of your suggestion is that these websites are managed by the same people. They are not. Therefore, even if you come up with a good idea to improve one or all of these websites, you would have to convince these separate website operators to implement your idea. Simply presenting your idea to them will not get this done.

In many cases, you would have to spend time befriending an operator after you establish contact with him or her. Some of these operators know each other and belong to an inner circle of Perl developers (a Perl clique). If you belonged to the same group of friends, then implementing your idea would be a much smoother process for you than if you were an outsider. Good luck.