Multistate Change Shape / Image
Be able to change a symbol shape and color. For example, green circles, orange triangles, red squares. This will help colorblind users.
To accommodate colorblind users, allow multistates to control not only color, but also the shape displayed, and the line thickness of the shape.
Useful for asset health trafic lights. Using 0,3,4 or more angles in a polygon, or even better to have a list of symbols including polygons and '!', '?', 'X' and other useful symbols for various states for the equipment.
I am currently implementing this by adding multiple multi-state symbols on top of each other, and making them transparent for all other states than the one they are supposed to symbolize. Cumbersome!