As one host’s meetings over this medium frequently, the speaker might freeze.
The problem is, we don’t know if the speaker froze, we froze, and so on.
Solution… For the meeting host, we need a quick way to ascertain where the packet loss is occurring. I would suggest a simple meter placed by each member’s name in the participant’s list.
The meter could be faux lights (red, yellow, and green.) Make the thing large enough to give us some resolution as to the quality of the signals.
It might also be nice to have the ability to run a report of the same information. If one of the members is constantly having issues, we have some quantitative feedback we can give them.
With this information out there on the WWW, your competition might see it and run with it, claiming this brainstorm of an idea as their own. PFFT.