Dave, why rally troops around a contrib module instead of a core
patch? The UpAPI module is awesome work and implements some really
cool stuff, but is irrelevant to the discussion of Drupal FTP and it's
merit.
I think having ftp client implementations aren't really the greatest
thing, especially when PHP's native stream wrappers include FTP and
SFTP/SSH. There is a patch floating around for stream wrapper support
in core
http://drupal.org/node/227232
which would deprecate most of these types of file clients.
I think modules like drupal_ftp and media_mover are excellent use cases
for stream wrapper support in core.
If it were me I'd list it as officially abandoned if you don't need it
and let people know it's looking for a maintainer if anyone requires it.
.darrel.