I suspect that we'd only see XM or Sirius if Outlaw did something similar to the 990 and took a really good quality platform that already had satellite radio and modified it to their purposes - which is of course a possibility in light of the confusion and general turmoil presently surrounding HDMI v1.3. A "from scratch" design is less likely to include XM or Sirius for the very reason that nfaguys points to: there are endless ideas for additional features, but to hit the "sweet spot" on price and performance many of the more secondary features (satellite or HD tuners being two examples) will end up on the chopping block.