Provide row and col spacing properties in Grid object

Provide separately row and column spacing instead of common spacing in Grid object. It is very inconvenient to use Column with Row instead Grid for providing this functionality. I try to explain what I want with code below:

Grid {
    column: 3
    spacing.col: 4 // instead of spacing
    spacing.row: 24 // instead of spacing
    Repeater {
        model: 6
        Text { text: index }
    }
}