While I think support for multiple speakers is great news, I would like to see Google introduce further features into GH that I would find useful:
1. ability to create reminders, set calendar events and take notes.
2. send messages and make phone calls
Google needs to write additional data to support these activities and now that support for multiple speakers is on the way to the UK, it should be possible to achieve these additional command features. There is, it seems a conflict here because Google wants your GH to be a public device which others besides you can use. So it seems multiple speaker support is a good first step in adding features.
I would like to see GH achieve feature parity with my Pixel XL. Getting a digital assistant to work really well is a great idea that I am fully supporting. However it is really difficult to get right and expect a number of companies that are attempting this effort (LINE, Bixby, Djingo, etc) will soon discover how difficult and costly this is. It is one thing to interpret our speech. It is another to make sense of it and provide answers and services that are intuitive and really work. These speakers need data to improve but we won't give it data if the service is unable to provide us a useful service: a chicken and egg problem. Alexa and Siri are struggling with getting user data because the service is just not good enough to get more usage. Google should be able to get this right soonest as it has the world's leading AI developers and it has massive amounts of our data.
I grew up watching this digital assistant feature used on Star Trek and now I can do the same. I just want to be able to do more!