It would be nice to have a banner displayed prominently on our main channel page saying we are on vacation from X-Y and/or some customized note that we could enter saying we are taking a day off for Z reason.

That way followers can easily see when they come to our page that we won't be on, why, and for how long. I don't think many people know about the scheduling tab and may not check there, so having a banner appear right on the main screen would be useful.

Many of us may use discords to relay this information, but not all followers will join discords and I feel bad when I miss streams and I can't notify them why or for how long.

A notification banner on the main channel page will give streamers an easily accessible and understandable way to communicate with their viewers about when/why they are missing a stream and when they'll be back.