Last time I heard the word "PCI"? I dunno, every time I talk about nonlinear editing. Firewire is only useful DV which is at the bottom of the professional barrel when it comes to format choices. BeatSP, DigiBeta,HD and any other formats that need to be capture uncompressed all require bandwidth that FW (either version) can't handle which means you need a, gasp, PCI card to get the a/v onto yer machine. Reliable wireless HDDs?

Not any time soon. Wireless SCSI RAID setups that are interference proof?

How fast is wireless today? How fast is a top dollar SCSI RAID?
Workstations/desktops will always be around because non-computer technology is always changing and there will always be new and different devices that need to communicate w/computers in new and different ways. So thru the use of PCI or PCI Express (or whatever the "next gen" of slots is called) workstations/desktops can be customized or upgraded to take advantage of the new tech w/o having to buy a whole new machine.
For home use it's a complete different story. Most users don't need any more speed or power than they currently have(one reason for lower Desktop sales in general, IMO). Personally, I'd love to get a 12" PB and Airport so I can surf and network from all over my apartment.
I know someday things will change but the current laptop and desktop "form factors" are going to be w/us for quite a while. I agree w/FlamDrag that things won't always be this way, but I think his timetable is 15yrs or so too fast.
Lethal