The original NameThatMovie was built on https://www.question2answer.org/.
Filmfind is built on https://anspress.io/.
For experts from the original project, is there even anything about the new software (AnsPress) that you like better, or is Question2Answer superior in every way?
Or, should we consider moving the project over to an entirely new option?:
Discourse, while not specifically catered to the Q&A format, can be customized to be so and is hands-down the most popular, full-featured, and supported open source projects of its kind.