Shame you can't do what Unix does which effectively allows a directory name as a drive... So you "mount" a disk onto a directory. You'd mount a disk as "c:\data-disk-52" and clicking on it navigates down to that other, now mounted disk.
I can see lots of code changes would be needed (I didn't say it would be easy), and it certainly would break lots of existing things.
It just seems to me a nice feature to extend the "regular" Windows system.