I agree. It seems Nokia has an XML config which changes the Nokia images to something else for "custom branding purposes." It's not documented, though, and I didn't have time to mess with it. So I simply renamed the existing boot wallpapers. I also resized and altered a TUX image a bit to replace the Nokia one which appears on bootup before the "hands" and at powerdown. There's still another identical "Nokia" one in the bootloader. I haven't figured out a way to alter that, but Fanoush's boot menu seems to help it disappear

I will post the TUX image soon on my Maemo page with instructions on how to use it.

What would be really nice would be an init script that could be made which would alter the boot image and say which device is being used as root. It should be relatively simple to implement. You could use it to specify the boot wallpapers and to show the root device. A simple terminal script would be sufficient. Then, if someone made a GUI for it, the GUI could interface with the underlying script. It appears, from the looks of the XML init for the boot screens, that Nokia already has such a GUI for the control panel that they haven't made publically available. Maybe someone should submit a request