Hi,
Thanks for using our plugins. I can help you get started on this, but I am limited in supporting customizations.
The js file that controls the Map View is found here:
\events-calendar-pro\src\resources\js\tribe-events-ajax-maps.js
The plugin actually uses the minified file here:
\events-calendar-pro\src\resources\js\tribe-events-ajax-maps.min.js
The script is registered in WordPress with this name: tribe-events-pro-geoloc
Let me know if you have any follow up questions, however, as a customization I might not be able to provide much more then this.
Thanks