The worst "danger" would be from the older goslings, they are total snots to stranger goslings/chicks/ducklings. The adults will LIKELY seek to protect and parent any goslings, whether they hatched them or not.
I had three week olds and then got five more hatchlings when I lived in Idaho. The three week olds were very mean to the new babies. Once their size discrepancy wasn't so bad, I put them all together and at least they couldn't really hurt one another. They were exposed to one another daily all day (but separated) to promote familiarity.
Goslings will and do die from bad weather, esp in the first few days. Wild geese often hatch 10 or more goslings, only to bring a couple to maturity. Even good goose parents with a lot of goslings might not keep one or two warm enough, if there are quite a few.
I turned over my goslings when they were about four weeks old and it was no longer bearable to keep them in the house (stink and mess). They were big enough to manage themselves, and young enough the adult geese still wanted to parent them.
THere were a couple of stories here about an adult goose killing a gosling. That is EXTREMELY rare. That is not a normal goose (gander, in this incident). Ganders are as maternal as the geese. So it's smart to watch them to make sure, but it's not likely to happen. I gave a flock of six ganders four female goslings and they did great with them