Paging @pipo @Finki and @nickspacemonkey
That sounds like an interesting tool. If there is a site that has data available showing names of holdings, percent of those holdings in the ETF, country of holding etc., I wouldn’t mind putting together some kind of interactive dashboard as a personal project.
It could be doable to put together a dashboard using R and RShiny or Python and Plotly.Dash
It could even be done in Tableau or Power BI and hosted online.
The only issue I can see is finding a website which houses all this data. Scraping it from the site or connecting to the service via an API would be doable. Putting together the dashboard would be the fun part then.