Hi Arnaud I loved meeting your site. It's fantastic and very useful for traders. Congratulations!
The currency index is one of the most important parts of the site, as the strength of currencies is essential for analyzing market trends, however it is built on exponential moving averages of each currency, as you reported when responding to another question.
I would like to know if there is a possibility of developing a currency index (strength of the currency) based on the economic indicators of each country, such as: employment, income, industrial production, unemployment level, interest rate, GDP, and some more that are able to show the economic health of the country and its currency.
I believe that each of these indicators is much better able to demonstrate the strength of a currency in place of the use of moving averages, especially on larger timeframes, such as weekly and monthly.
Scores should be created for each country indicator, considering their relevance to economic activity, and putting all the scores together would create a single overall score for each currency, demonstrating the strength of that currency compared to the strength of other currencies. It would be amazing and certainly much more assertive!
Please think about this idea. I wish it could be carried out on your website.