It`s kinda like looking at a modem/network card that would work perfectly ok inside an ISA slot. And in a years time u`ll be looking to have to buy a pcie 2.0 thingamy just cos u`r mobo won`t do an ISA.
It`s progression, these slots are getting faster/better than the hardware that plugs into them seems to be moving themselves.
What we`d hope will happen is that some point in the future a break-through piece of hardware will come along that takes advantage of the new slots.
Meh.
Be kewl if u could get to a stage where the slot is good enough to be used as a processor slot. So u could chuck in a base pci card, and stick the processor of u`r choice on it. And use multiple slots. Multiple brand of processors is probably asking too much, but would be nice.
Slot1 - C2d
Slot2 - C2d
Slot3 - etc..
Mounted ala a gpu.