In reply to Deborah Edwards-Onoro.

For the icon font sets, the only possible impact would be the additional loading of their css and font files. This is why I provided the settings meta box so you can disable the icon sets you don't need and their associated css and font files won't be loaded on your site.

As for the "Image" type (the latest & most requested feature so far), well, there will be extra HTTP request for each image :)