I am used to "Back", "Forward" and "Up" toolbar buttons (with corresponding shortcut keys) and I miss them in Saladin tool-bar. For me such buttons would facilitate navigation.
"Desktop" button n the toolbar (with a corresponding shortcut key) which switches to "Desktop" and "Recycle Bin" button (with a corresponding shortcut key) which opens "Recycle Bin" would be very useful to me.
I would also appreciate "Tray" toolbar button which minimizes Saladin not to task bar but to system tray. It may be added to title bar in stead to toolbar- additional "Tray" button before "Minimize" button. Either way would be fine for me.
Customizable toolbar would also be a nice option- right-click on toolbar- "Customize Toolbar" command which opens panel with available buttons which can be added/removed/moved/restored to default.