Just telling how fast it's downloading / uploading in kb or mb or whatever. Doesn't need to say estimated time remaining, like that other suggestion. Just tell me how fast it's going!
added in v2.4.5
AdminJohn (Admin, FTPbox) commented
I added both speed and transfer progress info in v2.4.5, which you can check by hovering over the tray icon.
However, I believe displaying this info in the tray text is not the best option (not very practical), so I am open to suggestions on how to make this better.
A dropbox-like popup window that appears when single-clicking the tray is one option, but I would love to hear more ideas...