The Borough Council may impose standards for streets, walkways, curbs, gutters, streetlights, shade trees, water, sewage and drainage facilities, and other improvements otherwise required under Chapter 200, Subdivision and Land Development. However, the Borough Council may approve modifications or changes in such standards subject to the "modification" provisions of Chapter 200, Subdivision and Land Development, where the applicant can demonstrate that a modification is necessary to preserve existing trees or vegetation, or to accommodate innovative site design.