Hello Aaron! I'm happy to answer these questions for you. You cannot create an irregular polygon shape using the maps feature at this time. We have the option for a square, rectangle, circle, or triangle.
You absolutely can make the booth background semi-transparent. To do this, select the booth, and then click on the color picker. There will be a small box that pops up allowing you to pick the color. If you click 'More' at the bottom there will be a color slider and also an opacity slider that allows you to adjust the transparency of the booth or region.
The map does not have a built in measuring tool. That's a great suggestion though, and I'll be sure to take it back to the engineers. 😊
Our maps can only be exported to PDF at this time, as the map would not be compatible with Google Maps. I'd love to know more about how you'd plan on integrating Google Maps with your event though!