Currently all Shortcuts, Scripts, etc. default saving the item globally. While this may be a reasonable default for some users, I don't believe it is the desired behavior for most users. Simply forgetting to check the box to NOT save globally can have dire consequences. It would be much more beneficial to have the box set (Save Locally) by default. This suggestion was made and concurred with by many more than six years ago. It should be a simple feature to add and for those that like the current behavior they could set an option to do it.