When using Gestures in Custom mode for the Thumb Button, there is no option to Snap Left and Snap Right in the available Other Options list. This is despite these actions being part of the preset Gestures under Windows Management and Arrange Windows. Why can't we use Snap Left and Snap Right when using Custom Gestures?

It would also be good if we could assign Smart Actions as Custom Gestures. At the moment, you can only assign a Smart Action to the Thumb Button click. But we should be allowed to assign Smart Actions to each of the 5 available options for Custom Gestures using the Thumb Button.