While custom content sounds cool, I like the idea of watching the same thing as an entire room of strangers and then reacting to that shared experience/content. One of the only things that keep me coming back to TV/movies is the ability to discuss what I've watched with my partner or friend.
Did we have the same reaction? How did we feel about the story? the characters? the morals? Without the same content that we all watch together, there won't be a common ground to learn from the shared experience. I think that would be a big detractor for me.
For the same reason, I typically let AI read my favorite Hive authors out loud so my partner can also listen in on what I'm reading/interested in. then we can share discourse about the message in the content.
There will be all kinds of options. You could have something created specifically for the both of you. Or opt for something more general in nature.
It is all going to be possible.
I can generate an image that only I look at or have one that is shared with the public.