What i mean is an Adobe Encore Template including After Effects animation AND PSD file to change everything:
Menu created in Photoshop including Button placeholder and so on.
(Start movie, Xtras, MO...)
Animated Background in After Effects.
(A looped video/animation/or something)
Encore Safefile with the PSD as menu and the exported AE movie as background.
(Rename the buttons only and replace the movie files in the Encore sequenz/customized background)
So when you open the Encore file including the PSD menu you will be able to change/rename the menu buttons or create one more. When your After Effects animated background includes text you'll be able to change it in the AE file. Also color, style, insert other stuff and so on. So you get a FINAL Encore DVD/BluRay menu with all other things to change the values like the buttons, background menu animation-in, maybee.
That is what i tought.
i hope u understand my english and what kind of idea i had.