I think it's kinda intuitive for `(foo ,@(list 1 2)) to expand to (quasiquote (foo (unquote 1 2))). If unquote takes multiple subexpressions, as it does in Common Lisp (http://arclanguage.org/item?id=9912), this can evaluate to (foo 1 2).
However, I really think this should be considered part of the behavior of 'quasiquote. Just like 'unquote has no meaning except as interpreted by 'quasiquote, it's fine for @ to have no meaning except as interpreted by function calls and 'quasiquote.
Hmm... if you say `@(list 1 2), does that pass (splicing (list 1 2)) or something to 'quasiquote, or does it actually pass 1 and 2? If I were trying to accomplish @ with fexprs, I think I'd prefer the former, and I'd treat regular functions/applicatives as though they were fexprs that expanded (splicing ...) manually.
