SJ is right. But my cam is a miniDV and all it has is firewire. I don't really understand their reasoning to remove FW - new MB has a ton of space to spare and it can't be very expensive...
You are oversimplifying the matter by quite a bit. Consider this:
a) there isn't really that much space on the case. The current ports end right where the battery starts. Would you like a smaller battery instead so you could have an additional port there?
b) No chipset has support for FireWire, it needs an external controller. And that means another chip on the PCB (and that costs extra), and that means bigger and more complicated PCB (which also costs extra).
What SJ says is right. Sure, there might still be some FW-only cameras out there, but those are in the minority. Cameras that use tape do use FW, but why mess around with tapes?
What if you already have tape-using camera? Well, there are few options:
a) Don't upgrade yet. Wait until you upgrade your camera as well. You are not required to buy the latest MacBook
b) If you want to buy, buy the white MacBook. It's still a good machine, even if it's "yesterday's technology". Or buy a MBP. Fact remains that you have both expensive and inexpensive options to choose from.
That said, I do wish that Apple would put more USB-ports on the machine. Since we are going to rely more and more on USB, we need more of those ports.