1) A ShinobiGrids update is being released soon which, amongst other things, adds a contentInset property which should allow you to manipulate this padding.
2) This is a bug that we have recently fixed which will also be included in the next release. Until then, you can just set the text alignment to NSTextAlignmentRight on the DefaultCellStyleForSelectedRows property on your DataGrid.
3) It sounds like you would also be able to do this with the contentInset property which will soon be released.
4) It should be possible now, for you to have computed fields in a footer row, although you would have to carry out these computations yourself & populate the relevant cells. I will forward this suggestion to our development team as a new feature however!
When the new version will released for monotouch?