If the Wizard has too many steps, they start overlapping. Consider implementing a way of indicating there are more steps, without displaying the steps. For example, the Pager adds an ellipsis in the middle, instead of displaying dozens of page numbers.

This is an enhancement request.

Wizard buttons can be modified via the activate event and replaced with a fully initialized Button, but it would be better to just offer more of the Button properties right on the wizard steps.buttons object properties.  For example, the icon/image properties, fillMode, size, etc.