I'd like to see a grid field that could be paginated.

Say the grid was a set of images from a folder. You could loop though the images adding them to the grid, or Statamic could do that automatically from the contents of the folder (with selection criteria). You could also establish the number of images, in this example, to retrieve per page (say 16) and Statamic would paginate that into however many pages were needed to show the folder's contents.