CMS action & "/cms" subfolder for each controller

How do I do this? (And is this a good solution?)

I want to have a "/cms" for each controller so I can login as admin
and edit them, instead of creating whole new controllers for the cms.

Default if you add a new action like, def cms... you have to do /
controller/1/cms.

I'm thinking of creating the backend that all links up each controller
through the "/cms"

How can I route this? and is this a good idea?