The new SVG icons in FM 14 are one of my favorite new features. I think it gives us the ability to easily create more modern looking solutions. I think it would be neat to be able to conditionally show two different icons in a button.
For example, I have a button that opens a chat/comments popover. I would like to show the chat icon with a transparent fill when no comment has been entered and the chat icon with a fill to appear when a comment has been entered. It would be great to be able to select a default icon for a button and then an alternate icon that would show when a condition (entered as a calculation) is met.