What could be done to simplify the maintenance would be to create one overlay with all the information you need mapped.
When you create the page double click on it and go to Basic Attributes and change the Page Type to Overlay or if you already have a working page like you want, just convert it to an overlay.
Then you would create as many pages as you need for your other customer you want and leave those pages blank and go into the basic attributes of the page and change the page type to overlay.Then in the Overlays settings choose the Overlay you have created/converted. You would use your existing conditions in order to display the number of pages wanted on the blank pages.
But that way you would only have one simple overlay to maintain instead of many different pages.
Let me know if you have any questions on this.
It's always funny until someone gets hurt, then it's absolutely freaking hysterical.