Not Quora Feature Requests Notepad. I have no evidence to suggest that the Quora Design team reads it.
Not an answer in the How Could X on Quora Be Improved? topic. Ditto.
Honestly, I’d find a Quora Designer’s account, and message them. I think your suggestion will still be ignored, but at least there’s a chance your suggestion will be read first.
If you are a Top Writer, you will have somewhat better access to Quora staff, but not substantially better. There is a dedicated Facebook group for user feedback.
From anecdote I am passing on from an unnamed source: there is a group of users that Quora staff solicit regular feedback from, including IRL; but its membership numbers in the single digits.