Suppose somebody transfers a pose to me, but my pose limit is already maxxed out. Will I have to delete an existing pose in order to accept the transfer?
Poses that are “in transit” (waiting for acceptance or for approval) are not counted against your limit. If you want to use the pose, you will have to go through the regular process of getting it approved and then that pose will count and you will have to choose to either remove a pose to make room for it or upgrade your account to a higher level.