Awesome!! Glad you tried it, thrilled you got em to work, and ecstatic that you and the chilluns liked them!! Plus a good read.
I'll edit my original recipe to reflect the squishing bit, as well as Esav's sour cream recommendation. You can definitely add a little pepper to the mix as well, won't hurt hardly anyone.
Magic egg/potato ratio is about 1 egg per 2 or 3 potatoes. It shouldn't be runny or anything, it's not an omelette, just think of the egg as the glue that holds it together
Definitely post pics, I'd love to see how they came out!