I can assist (since Wes is busy)…
1. The featured-page and img was added as an option if you wanted to select a featured image size for things like the Genesis Featured Page/Post widget….or when selecting a Featured Image size in the Genesis Theme Settings for the blog, etc….
2. I’m not sure why that’s happening, I don’t think Epik has anything has anything inside of it that would do that…..could just be a setting somewhere, not sure.