It’s unclear if Ghost and Laurence Fisburne’s Bill Foster were snapped by Thanos as well. And Scott’s 5 year- absence and presumed death should have some emotional ramifications for his family.
There are still some narrative threads to pull from for Ant-Man 3, as Ant-Man and The Wasp didn’t exactly wrap everything up with a nice bow.
Ghost is still in the picture, with Janet experiment with the Quantum Realm to help alleviate her symptoms.
Plus, the fate of Scott’s crew (especially Michael Pena’s Luis) is currently known as well.