Suggestions for improvement:
Preview interface: take inspiration from Topaz Video AI or other video enhancement programs, where you can see a slider that moves across the video, with the original video on one side and the AI-enhanced video on the other. As you move the slider to a different frame, the AI preview should be applied to that specific frame each time.
Short render preview: if a few seconds of video are rendered, there should be an option to increase the duration from 3 to 5 or 10 seconds, starting from the frame currently being displayed. Once the selected number of seconds has been rendered, the video should continue playing normally.
Preview stability: in any case, please check the preview functionality of all modules, because it is unstable and often crashes. I remember that the Upscaler preview with Titanus crashes, and the Video Refiner preview also crashes.
Cloud project management: when running a project in the cloud, there should be an option that allows the user to turn off their PC without interrupting the project. When returning to UniFab, the user should be able to see the current progress of the cloud project. Once the cloud processing is finished, UniFab should send a notification informing the user that the project is ready to be completed/downloaded on the PC.
