NC vs Core & Shell for Mixed Use Building

Working on a project that is: 151,971 SF - multi-family residential units (30%) 168,780 SF - retail/future occupant build out (33%) 185,870 SF - parking (37%) In the past, we have used LEED NC for our mixed-use buildings. However the mixed-used buildings have never gone above 10% of the total area for future occupant build-out. What are the advantages of using Core & Shell in this example? I know for NC, any future tenant spaces need to be modeled as base line systems for the Energy Model. I fear that this will have drastic impacts on the project since 33% of it would not receive the benefits of energy efficient design. Thanks