I have received complaints from customers that it's not very clear what is actually showing in the presentation you send from your PC. If you choose to present a excel page and then open a email in front of that excel page, the email will be presented for all participants in the meeting. This could lead to inconvenience.
It would be good if the person showing a presentation could see what is presenting. Either by some indication on his/her screen or a mirrored image of what is being sent as presentation.
Otherwise, thank you for a brilliant product!