Proofreading for completed transcriptions.

This is a suggestion of mine. If you complete a transcription request. you should be able to request proof reading in case a native speaker hears a different word then you did.

For example here are two songs that are transcription request.

https://lyricstranslate.com/en/cramb-crashers-one-lyrics.html

https://lyricstranslate.com/en/garden-visual-kei-deep-white-lyrics.html

Now they have some question marks indicated that I (and in the case of the first one the person who guessed the lyrics) wasn't sure of some of the lines. So proofreading for transcriptions should be a feature