Hello Miltos,
Thank you for your interest in our Geek OpenStreetMap module.
Please find below answers to your questions:
Q: Is there a roadmap for allowing GPX files to be attached to articles? I know it works with GeoJSON, but GPX has some advantages (such as elevation profile support).
A: Our module currently only supports GeoJSON format, not GPX format.
Q: Is there an option to choose the position where the map will appear in the article?
A: Yes, you can add the short code {geek-osm} to the article to specify the position that you want to display the map.
Q: Are the custom fields that can be used as filters limited only to the list type?
A: Yes, Currently it only supports the custom fields type List.
Q: Do all custom fields need to belong to the same group?
A: No, it is not required to add custom fields to the same group. You can add custom fields to multiple groups if you wish.
Please do not hesitate to contact me if you have any additional inquiries.
Thanh Nguyen
Founder & Lead Developer