Channel Points for TTS
Many streamers have a feature where if you donate a certain amount of currency, whether that be bits or the local currency the streamer has setup on their streaming provider, your message will come up on stream and get read aloud by a voice that the streamer can customize. Because there is generally a minimum amount to get this text-to-speech feature (TTS), and it is a big moneymaker for some people, I don't know how many people would use this feature, but I think it would be a good idea to allow channel points to pay for TTS messages. I know of one or two streamers, in particular, that would benefit from this because they use TTS messages to make streams more fun and create content. People now make memes all the time using the feature, it is very entertaining. Unfortunately, I think that there are so many people that would be really good at crafting excellent messages, but they are unable to afford to donate so their messages are never heard. This would be a great outlet for them, and one that I think is realistic. Although it may take some work because Twitch would need to work with the streaming providers on this, it's something that is absolutely possible and should be investigated.
You can get a bot that does this. https://www.youtube.com/watch?v=iCkC8t0I7mA