UPVOTING THIS!!
I add thumbnails to my streams after every broadcast - it would be nice to upload them ahead of time and have them visible on the schedule page. It think a lot more users would use the schedule feature if this was present. *COUGH COUGH* I quite love Youtube's version of this and being able to see "Upcoming Livestreams."

Let streamers add custom thumbnails to their live streams through the creator dashboard, instead of taking a random screenshot from the first 5 minutes of our stream.

It would be huge for small streamers on the recommended page getting new viewers with a flashy thumbnail and would allow viewers to get a better idea of the content they would like to watch.

Please vote this would be huge for all streamers!

It's hard for small streamers to stick out on twitch, especially when a streamer tries to play a game like apex or minecraft.

Thumbnails can help advertise a streamer while the viewer is browsing possible channels to watch. Youtube does a good job of doing this and I believe twitch can handle this as well.

Also, it's hard to pick a streamer without knowing what he or she does. Thumbnails could aid in filling this gap by demonstrating a user's personality or content. It will also make browsing twitch feel less bland.

In addition, this can raise interest in hiring a thumbnail artist for streamers and create more work for artists.

When you're browsing Twitch, isn't it hard to tell what kind of content you may click on when all you have is a title and a random screengrab?

We should be able to upload a thumbnail to our LIVE stream and not just the VoD or highlight. This would allow streamers to grab viewer's attention better as well as let personalities come through.

Streamers could use the schedule feature to upload a thumbnail for that particular day and change as needed.