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I agree with this, FUSE would seem to fix a lot of annoying problems with gnomevfs.
No, it wouldn't.
gnome-vfs is a framework that goes far beyond the capabilties of FUSE. FUSE doesn't use asynchron operations, for a start.
The use of FUSE in gnome-vfs, it's merits and drawbacks has been discussed over and over again in the gnome-vfs-list.