While waiting a moment for a 40MB file to upload I noticed there's no easily readable transfer progress. I see the bytes changing and transfer speed but I don't really know what % that is of the whole file or directory in which case this would be more useful.

If the info didn't contain Starting FTP transfer, transferred ... you could also fit the estimated time to finish there so it would read: Transferring BB (YY% at XXkB/sec, HH:MM left) or sth like that. The total size /BB/ could also be converted to KB/MB when needed.

Instead of Transfer complete, transferred ... bytes (speed) it could read sth like: Transfer complete: BB in HH:MM (XXkB/sec).