pages of line buttons

[engine411]

The Yealink T46G has three pages of line buttons, and we like this, it's a smart use of the same screen real estate. We just wish there were more pages.
Is is possible to add more pages via provisioning? Or can Yealink add this as a feature request for future firmware?
The ideal would be a selector to specify how many pages of line buttons we want. I assume that if the phone can already deal with three pages, it should not be hard to allow 4 more pages.
Theoretically, if this were possible, I could set up to 7 pages before the home screen would need to put the little green page numbers onto a 2nd label field.