FS BUILD flight planner.... yes or no?

Many parts of SIDS and STARS have common points to all runways. I include them but delete runway specific waypoints in FSB with this method:In the route grid delete any undesired waypoints after your first build (without export) including the most approximate SID and STAR. Check the map as well looking for inappropriate rough spots. In the menu item Build Options click on Build From waypoint/route Table Grid. This is a non-sticky option that must be set in each session. After changing anything in the route/grid table with this option on the table will not revert to a table rebuild from the FP window, but just build and (export on now) export based on the waypoint data in the grid. This leaves vectoring room for departure and arrival with the most concern for departure and arrival directions being taken into consideration.This allows for last minute runway changes (in RC) due to the observed operation of AI.