Think you were right to leave them.
We have the lovely Maximus who is our youngest Steinbacher, born in our kitchen and ran around like one of those kids flappy toys on the end of a stick, very funny, running at top speed, the kids would love that. He has only partially bonded with the others however, as he also sees me as mum and loves me which is great. He'll leave the others sometimes and come up to the house and into the kitchen (doesn't care about the dog or cat) and wanders around the kitchen, sometimes sitting down for a nap. He's over 2 years old now and is beginning to bond with the other geese better now but it's made him very confident with people in general which isn't to everyone's taste - he does tug at any male's trousers if they are talking to me, not females however and he is fine with our kids (they're 12 and 14 now so not so wee). Having the goslings is great they are a lot of fun and I expect if the kids and goslings grow up together that would make much more sense. And fun. I hear Embden geese can be the most aggressive. I could send you some of our eggs if I could find them - ours wander up to about a third of a mile from the house our in the wilds and I've no idea where they are laying at the moment - keep saying every year I will pen them to get the eggs then we never get around to it. If I do find them I would be happy to send you some...