Multiple connections to server in single WinSCP session.....
If I have multiple files to transfer I can do so by opening multiple sessions of WinSCP and starting one (or several) transfers in each session. By doing that I see ~330 kB/s in each of the sessions, until I saturate my upstream pipe.
It would be great if WinSCP offered the option to connect X times to a server, thus allowing multiple files to transfer simultaneously.