N... no GIFF?????
<moment of silence>
No... I can't accept that! Giff and Giant Space Hamsters are part of the FUN of Spelljammer... Purposefully stripping away stuff like that would be a major problem, alienating the people who DO like that aspect. It'd be SO much easier to just make a nice "D&D Adventures in Space" hardcover, and incorporate whatever new feel they want it to have, and let the DM decide which aspects he wants and doesn't want. By going out of your way to limit what I consider the "good parts"... it just sounds like a comic book writer completely changing a title to suit his own needs.
Granted, we haven't seen it yet... and at least the Giff is on the official Spelljammer page... <wink wink>
Chris