I did just think of another technical concern I have for the future Boxee Box... It's a concern in that I'm not sure if they'll support the feature I'm looking for...

Native output resolution switching. That's the ability to change the output resolution to best match the properties of the video file being played. So instead of always outputting 1080p, allow switching through 480i, 480p, 720p, 1080i, 1080p/24, etc.. Automatically.

That way you get as close to an unadulterated video frame if you intend to use an external video processor.