content: url() for replaced data?

After reading back and forth through a (nearly) whole thread from a few 
months back on this issue [1] I have decided on what I feel would be the 
best solution to both sides.

content: replaced(url(...), height, width);

such that the record of Image Ian was trying to solve with CSS could be 
dealt as such:

img { content: replaced(attr(src, url), 50px, 50px), attr(alt), none; }

or something similar.

This would enable a replaced elem to be created inside the "inline" 
elem...which would work as expected when the inline is an anon-box as a 
single-replaced elem would designate (or we could always do as url() 
alone does for the replaced(...) alone case)

This also allows re-sizing of a case such as

content: url(x) url(y) url(z) "Company" url(logo);

in terms of each section.

Boris, Ian, does this address both concerns?

Any new concerns?

...Others?

~Justin Wood

[1] <http://lists.w3.org/Archives/Public/www-style/2004Feb/0290.html>
     <http://lists.w3.org/Archives/Public/www-style/2004Apr/0116.html>