The "positioning" is the chick orienting with its head to the air cell end, head under wing. While the chick will normally pip at the deepest dip in the air cell (which seems to be natural as the shoulders are up in the higher side), the only time it would likely cause an issue is if the chick pipped exactly on the bottom of the egg and the egg could not move due to overcrowding.
I know mine wiggle themselves and get rolled all over. It's so cute to see a new-hatched chick snuggle up to a sibling still in the egg and hear them peeping at each other.
