1. Option to disable background image. Current image is messy and makes chat screen confusing and hard to read. EDIT: Turns out this is possible via Kaizala web interface. It is sufficient, no need to be able to change the image via mobile app.
2. Option to LIKE simple text-based messages like you can LIKE pictures. This would help keeping the main thread clean so people don't post thumbs-up messages when they LIKE normal text-based messages.
3. UserVoice. It no longer exists. Where to submit improvement ideas?