There have been posts about not seeing yourself in your child and that's what I worry about most.
Both of my bio kids look a lot like me and less like DH. Everyone comments on it ad nauseum. When DD was born, she favored her daddy more and he was so happy - and I admit I was a bit jealous. Cause DS looks like a little graven image of mommy. He says he doesn't care that the kids favor me, but I am sure he does - and with a DE , there will be no genetic link for me to hold onto.
Also, we would be a don't tell situation - so I worry about siblings bringing up - hey why don't you look like mommy? My DS would say something to that I am sure knowing his personality.
OTOH - I am not ready to call my family complete.