> Anyone who wants to present can simply join the hangout from their laptop and then share their screen

This is in line with every other solution like IBM Smartcloud or Citrix GoTo meeting, there isn't anything new or innovative about this it's just a little cheaper. Also comes with the nice vendor lock-in that it's not self-hosted so all those sensitive business conversations are going over google servers - see how that goes down at audit and also that you are required to have google apps.