For existing 990 owners -- would be nice to have a box that takes HDMI in and has high quality analog outputs. So, 2-4 HDMI connectors in, 8 analog audio outputs to the 990, and HDMI (+DVI?) out for video.

I'd think for around $200 this would be a good sell to many existing non-HDMI capable pre/pro and receiver owners. Sell it packaged with the audio cables for under $300 and you make even more.