The use of RDP for desktop sharing is very slow over limited WAN links and wastes a lot of bandwidth. They should either find a way to allow RDP to be tuned for < 100k of bandwidth or find a better engine.
Currently, the fit to window only zooms OUT. So if the user sharing has a larger desktop, the setting shrinks the shared content to fit your screen. Fit to window should also zoom IN, so the picture grows to be legible when the shared desktop area is small, say a laptop or tablet.
In Lync / Skype meetings it should be possible to transmit a clearly visible mouse pointer, marked with the name of the participant pointing at a specific point during a desktop sharing session. Currently only the presenter's pointer is visible. This is a common feature in products like Teamviewer and should be available in S4B desktop sharing too!
It would be good to see a conferencing policy option that has a time limit setting for how long someone is able to control a machine, once they have passed the time limit they can request control again, This would be a useful security feature, as users may forget someone has control to their machine leaving the machine exposed.
