1)  +1 for DHT support
2)  Ability to Seed directly from the DNS-323
3)  Ability to create torrents from the DNS-323 using its own paths i.e. /Volume_1/BT/share, not a windows mapped directory
4)  BT Settings Retain after a reboot -- right now if I reboot after specifying upload limits, the setting resorts back to -1 (unlimited)
5)  +1 Built-In SSH support that respects users & security groups created from within the 323's web admin page; not like the way ffp implements OpenSSH where the user has to synchronize passwd & group manually.
6)  +1 A built-in utility that automatically checks disk consistency at startup, shutdown, and reboot.  (presently using cleanboot.sh for this process).
7)  SAMBA:  Add a recycle bin automatically - presently we have to modify the samba.conf to get a Recycle Bin, however it's clunky and has some issues (see forums for the problems)
8)  Undelete facility that is accessible from the Web Interface