I think it might be cool to not have one logo, but a set of interrelated logos, which one could rotate through. SInce they might all have areas of similarity, they would still be recognisable as the FSFE logo, but they'd change each time. I like the way Googles logo changes you see.
Here's another nice reason: Due to the fact that the logo changes would around a lot, depending on the time of day, the season, what's happening and last but not least the phase of the moon ... ummm .. I think a lot of noisy people who complain about logos would be less noisy, and a lot of creative people who like creating logos would be like... creative you know :-)
read you soon, Kim Bruning
Peace, Love, GNU! (Silly IBM)