We would like to see the current built-in FTP server replaced with sometihing far more robust. E.G. PureFTP.
http://www.pureftpd.org/project/pure-ftpd
We would like to have Passive FTP, the ability to define ports for both FTP control and data, and the ability to add accounts that do NOT have to be storage accounts.
This would enable more effective use of the DNS-343 for backups for small and medium-sized businesses.