myTracks has an AppleScript interface that can be used by me and you to implement additional features. I already developed some scripts that can be easily installed using the "myTracks Script Installer". To install one of these scripts please follow these steps:
The scripts are installed in the folder ~/Library/Application Scripts/info.stichling.myTracks. If you wish you can edit and customize the scripts as you want.
PS: All my scripts are written in Python instead of AppleScript ;-)