Are we unable to upload icons for Macros anymore?
What do you mean?
You can set a macro icon by double clicking on it in the editor and selecting one (preferred), or by single clicking to select it and then pasting in an icon image.
If you haven't seen this you should check it out:
Yes, I realized you have to copy/paste custom images into Macros. You can't drag an image into place like I was attempting to do. But it works!