Design coverage objects capable of efficiently managing access to datasets with 4D + bands dimensions. Determine whether new interfaces are required or whether existing Coverage interfaces are sufficient. Determine whether objects specific to each configuration (2D+time, 3D+time, 3D+time+bands) are required or whether a suitable general purpose "nD" coverage implementation will be efficient enough. Design an efficient translation engine between grid indicies and the "CRS" assigned to the grid. Determine whether it is necessary to permit "indexed" access to coverages for efficiency. Explore need for a "coverage iterator".