broad-brush approach to its subject.

broad-brush assessment of value.

broad-brush terms.

broad-brush information on the coverage of programs and some evidence on their (otherwise obscure) longer-term impact.

broad-brush resolution of a dispute.

Cost per QALY is a useful metric, although more often a rather broad-brush assessment of value.

Characters are underdeveloped stereotypes, or to be kind, broad-brush archetypes.