A summary of your idea:
Add the international format yyyy-mm-dd to the Inspector > Data > Data Formatting > Format popup list
This simple and easy to implement change will let the world know that FileMaker is useable by all people on planet earth.
Truly it would be a change that would have impacts that span time and place.
Why this idea is important to you:
The benefits are obvious and the cost to implement is low.
- Better for sorting, both visually and exporting.
- Compatible when exporting data (with the preserve formatting checkbox) that is going to be imported to SQL and (others?)
- Too many advantage to fit here...
Specific use cases you are looking to solve:
Increased world harmony through more international and interoperable technology.