A few suggestions to clean up the UI to make channel points rewards convenient to use again, as that menu has gotten rather bloated (specifically and especially referring to the viewer-side menu that pops up when you click on your channel points, containing rewards, predictions, community challenges, etc.):

Please remove any feature from that menu that doesn't focus on channel points. They get in the way and make it more difficult to quickly see the cheapest rewards available on the channel, and confuse some viewers and add more ability to misclick. Please find a different place to put those features, or at the very least let the streamer put them at the bottom, and/or give the viewer the option to hide them.
Please give viewers the option to hide sections of that UI which the streamer themselves did not put there. This would include watch streak notifications. Some viewers don't like to share that with the streamer or chat and would like to hide that banner to let them more easily read the names & prices of the channel point rewards.

Also please rearrange the "Manage Power-ups & Channel Points" settings in the twitch dashboard so that custom rewards are at the top, as those are the ones that streamers most often need to troubleshoot or disable while live, so it would be nice to not have to scroll too far to find it.