We associated each grid cell to a location in the Legacy container.
In a 5x25 layout (5 columns, 25 rows), the top left cell (column 1, row 1) is associated with the top-left most point in the Legacy container.
The bottom-right cell (column 5, row 25) is the bottom-right most point in the Legacy container.
If you space out the items across every few rows, you can get a decent arrangement.
By Publish 66, we're hoping to get you folks resizeable grid/list view.