Perhaps the most far reaching of the advances made in planetary sciences with the VLA were made by the use of bistatic radar. However, this application of the VLA was entirely unanticipated in the original design, and most of the experiments carried out have been severely limited in several ways by instrumental constraints. Although many other VLA studies in planetary sciences have been made successfully, lack of coverage of specific frequencies and lack of sensitivity have proved to be limiting constraints. In addition, the need for better angular resolution than is available with the current VLA (but not as good as the VLBA) is clear. In the following we address specific topics in planetary science which can be uniquely addressed by the enhanced VLA. A final consideration is that future space missions are likely to be smaller and less complex than recent ones. Therefore, it is very important to consider how the VLA can help maximize the return of such missions.