Be Able to deploy Portal Sharing Settings and Organisation Wider Default Sharing Settings at the same time
For example if attempting to deploy
OWD permission Read -> Private, and Portal Sharing Set None -> Read. Gearset will fail validation due to SF complaining that Portal Sharing Settings cannot grant Read permission, since OWD is already giving that access.
Though what SF sees is that Portal Sharing Set is trying to give Read when it already has that access.
Therefore, if I want to make the deployment then I would have to do in 2 steps.