I have a FF on my Ross Eurotour too, and I love it. While it isn't a necessity, it is nice to not have to pedal while shifting when you're going downhill. I just hope it doesn't wear out antime soon, though-no company that I know of still makes the FF System! I'd be limited to bike shops with NOS.
I would seriously love to see Shimano re-introduce the idea with upgraded parts, though. I think it could become pretty popular if the upgraded version was put on MTBs-it would be a great feature not to have to pedal while shifting when I'd be going up or down a steep, rocky hill. And weight wouldn't be too much of an issue.
Save the FF System, though-even if you don't ride the bike, you can always keep it as an oddity or as a great example of how cycling technology changes.