Currently, when doing a data deployment Gearset will let you know of all the referenced objects from the object you selected. What it doesn't do is the opposite of that - let you know all the objects that reference your object with a lookup.

It'd be great if we could add a filter to utilize some data pulled in a fetch/query during data deployment.

ex. field (TeamMember.ProjectLookup_c in {returned Project results in query in previous step of data deployment).