Originally posted by groovebuster
I have to disagree with your disagreement! 
I am editing video myself. Semi-professional video editing is mostly done with the DV standard. 1 hour of video in DV equals about 10GB on your harddisk. I don't see why you would need the space for about 30 hours of video and more on your harddrive permanently, even if you are working on several projects at a time. It takes you 30 hours in first place to get all the stuff onto your machine from your cameras. Finished or halted projects go on an external harddrive or are archived on DVDs and are not collecting dust on your harddrive. It would be maybe convenient to be that lazy, but it is unprofessional in some way (a hard drive crash and boooom, ... all your projects including the finished ones are gone). I don't see any reason why Apple should screw up a really amazing design of an enclosure just to please the few people who are too lazy to spring clean their harddrives after a project is done.
Overall I have 200GB of internal disk space on 2 harddrives in that particular Quicksilver (I own two) and so far I never was running out of disk space because a project became too big... If it was always because I didn't get rid of old projects that actually didn't have any reason anymore to reside on the internal drives.
The high end professional video editing (and music recording) is a different matter. There you need high bandwidth and you are dealing with huge amounts of data. But(!) for those people an external RAID would make much more sense anyway. That's why you have the option for a fibre channel card on the G5s to connect an Xraid. That is the really professional solution. So calling that neglecting a whole market is a little bit weird and I can't really follow you on that one.
To squeeze everything possible into one huge enclosure is inefficient, not at least for the design of such a work station.
groovebuster
Groove, if I may call you that,

A lot of it depends on what you are editing. Obviously if you primarily cut 30 or 60 second spots you'll eat up much, much less disk space that people who cut feature length movies. I'm currently cutting a short (it will be about 45 minute or so when it's all said and done) and they shot 13 60 minute MiniDV tapes. So that is 156gigs of a/v files (DV is about 12gigs per hour) and I wish they woulda shot more. Well, actually there are some odds and ends that haven't been shot yet so I'll probably get a tape or two more sometime soon. Now if this was a feature length movie, or a documentary, I would have a butt load more footage to deal with.
Since you only get one expansion bay that means you only get one internal HDD that can be used for your media which means you are forced to use FW drives which are more expensive than internal HDDs and they not as "problem free" as internal HDDs are. If you doubt the "problem free" part just go try to find FW drives that have been certifed by Apple to be used w/FCP. This is not to say that quality FW HDDs are problematic, which they aren't, but if/when I start using FW HDDs there will always be a fear in the back of my mind that FW specific conflicts will arise mid project and I'll be SOL.
Also, w/the current G5 cases you lose the ability to gain HDD space via HDD "accumilation." For example, currently I have 3 80gig HDDs in my Quicksilver (1 OS/apps, 2 for media) and I'm planning on buying 1 more drive for media capture (at least a120gig). So w/my 3 HDDs I'll have 280gigs of HDD space. But w/the current G5 cases you can only replace the extra HDD you can't add to it.
Now, like I've said in all my other posts, to me this is more of an announce that I hope gets "fixed" in the next case design, but it's not a show stopper by any strecth of the imaginaiton. And w/SATA being able to have longer cable runs hopefully we'll see SATA external HDDs and then I would stop complaining about the lack of internal space. Of course I would then start complaining about the extra clutter having 3 or 4 external HDDs adds to my work space.
Lethal