More Folder Icon Grid Choices

Currently in the Home Up Home Screen settings for the folder grids, I think it would be nice if on the "Folder screen grid" choice, that we can have more than direct numerical incremental adjustments. For example, the grid currently goes from 3x3 to 3x4 to 4x4 etc, up to 7x7. Why not allow each dimension to have its own variables. Example, move the left side numbers of the grid separately from the right numbers, like a separate scrolling function.  That way, one could choose using a 3x5 or a 4x6 etc, instead of it increasing in a specific numerical order as it currently does.