I don't know why I can't create a proposal
A specific website is necessary for the SE; since identification questions aren't on-topic on Movies & TV StackExchange. Also, you can't ask movie identification questions for non-sci-fi movies in Science Fiction StackExchange.
The only good identification platform I have seen was a Reddit subreddit called Tip Of My Tongue (TOMT).
We require a similar website here.
Even with the new website, we can identify plants, animals, pieces of music, etc.