Brilliant plugin. Two suggestions

1. Add an ability to upload a normal icon (image icon), not an icon font, to any widget
2. For widgets that I don’t want to have icons, the widget UI becomes a bit cluttered because of the plethora of options that this plugins appends to the bottom. I’d suggest a simple checkbox first to choose whether to enable icons for this widget or not, and then show the extra options only if I check the box (i.e jQuery hide/show stuff)

https://www.ads-software.com/plugins/widget-icon/