I am a Parallels 7 User and I couldn't upgrade to version 8 or 9 or whatever without Firewire support. :-(
Firewire is the ONLY feature I've ever wanted to have, I do a lot of digital editing and I want to be able to capture from a Firewire device like a Canon XH-A1. I had a Windows XP machine running for almost 5 years doing ONLY that (capturing HDV tapes via Firewire) because on the Mac you don't have a good Firewire DV/HDV tape capturing tool.
Please don't tell me that you can't get Firewire, an interface which has been used for decades on Windows and Mac, up and running with the next release of Parallels, come on!
This is so sad.