Webdav has popped up in a conversation or two, atm I wouldn't expect any changes in this, since full unicode support on v5 beta is more important atm.. For webdav perhaps cyberduck for now.
Yes, I agree that full Unicode support is much more important.
About Cyberduck- I have tried it before and I don't like it, especially its one-panel interface.It seems its developer is not willing to implement the common two-panel interface.