Is there still no way to save a different template to be my default or do I need to select one of the 3 simple ones from the starting menu and then change it in styles?
Yes. There’s no way to save a default template in the web based versions. As a workaround, set up a new blank file as you wish and save it to your Trimble Connect storage. Then open it instead of choosing one of the three templates and make sure your first save is Save as… and give the project a new name.