If OpenPandora is as open and free as its claimed to be it should be reasonably easy to port the applications and games to a different ARM platform. Hardware is different though; N8x0 doesn't have hardware 2D or 3D rendering.

Usually, stuff is dynamically compiled so if you use different library and binary versions you might burn yourself during compilation and/or execution. To be on the safe side I'd compile it in my Maemo SDK or check out the dependancies. You can run it too, and see if it works, but it might crash on some point when you use a specific function. Sharing your experience and repackaging might also do wonders.