Solution: add a UI for users to compare currency pairs that they actively use. The simplest solution seems to be to ask a specific question (e.g. "which wallet has the most annoying problems") and ask the user to choose between two different currencies. Do this for each possible pair (that they indicated they use).
Use the Elo chess player ranking algorithm to combine all ratings from all users into a single metric for each question.
Solution: add a UI for users to compare currency pairs that they actively use. The simplest solution seems to be to ask a specific question (e.g. "which wallet has the most annoying problems") and ask the user to choose between two different currencies. Do this for each possible pair (that they indicated they use).
Use the Elo chess player ranking algorithm to combine all ratings from all users into a single metric for each question.