From discussions with the EFDA-JET Task Forces in early 2000, a range of requirements emerged for higher resolution Te and ne Thomson scattering measurements in various specific regions of JET plasmas. These requirements are summarized in the paper and seek significantly better spatial resolution than is achieved or is achievable with the two LIDAR Thomson scattering systems (4Hz core LIDAR ~12cm; 1Hz Edge LIDAR 2-3cm) currently working on JET. The feasibility of making high resolution Thomson scattering measurements is dependent upon successfully resolving several key issues.