It should be more obvious that I'm hosting someone
Right now, when hosting another channel (both autohosting and manual), the only indication to a viewer that I'm hosting and not actually live, is the small text underneath my username saying "Hosting SoAndSo".
Viewers will miss that. Nobody will see that. I had to specifically look for it when I thought something was off and I was seeing person A streaming on person B's channel.
The old colourful banner across the page that said "ThisPerson is hosting SoAndSo" and provided a link to their channel was a lot clearer. It communicated this in a straightforward, obvious way.
Now, the new way of showing this might be an interesting take on increasing viewer engagement with hosted streams, but viewers also need to be made aware that they're not watching the person whose profile picture and name is big and prominent, or else there will be a lot of confusion, and perhaps a lot of accidental unfollows.