For what it's worth, an outsiders view of what Common LISP needs ...
I'll have you know that a view on the subject from an outsider who calls the language "Common LISP" is not worth a lot. :)
more to the point: you enumerate several things which, you think, are "needed". do you have a concrete need for those, so that once they are provided "standardly" it would seriously enable you to do something? do Scsh or Rep have Unicode, and is that a serious problem for you that they don't?
oh, and if you want continuations and "hygienic" macros, I think you already know where to find them. the rest is supported by some CL implementations (I think Clisp has everything you enumerate, apart from the two aforementioned schemey "features").