There are some great fan-designed 3D models, many very faithful to the original blueprints, that a snapshot could work quite well for a tabletop battle-grid. Credit always goes to the 3D modeler. I only add missing bits and a bit of colour. Search here for the full series.
Among his various Trek creations, modeler Aryh Peixoto Filho has created both the nacelle control room and the warp nacelle coils for the Enterprise-D. These can easily be used for other ships.
Nacelle Control Room (PDF)
Nacelle Coils (PDF)