Nice, very happy to see this!
For now, many of my groups are working with miro and it causes me quite some pain, as it is so overcrowded with functionality. but it does works quite well as a rich media whiteboard.
hope that spacedeck can replace it at some point!
@jdaviescoates the BBB whiteboard is extremely limited, unfortunately, with less functionality than WBO. it is not possible to edit or scale text, once it is placed which makes it relatively useless in my opinion.