Grid system - user defined

A user defined grid & snap system for the scene editor, letting us designers drag and drop the actors into them, for painless level designing, where You need to be accurate. Let's say You're using tiles of 64x64 pixels, You set the grid to that, and a snap of 5-10, so they're easy to align, or any other size that the level would require.
Comments
having worked in non-graphical programming... a ideation of the display space you want to use is vital.
a large 64x64 pixel grid will not result in a grid that will fit entirely/evenly within the iPhone display. (480x320)
so the first thing I do in any new programming is set-up a Display Text Actor to show mouseX and one for mouseY...and drag them onto the scene in an unobtrusive area.
make your other actors initially drag-able and you will be able to see how they look on the display; reposition; and with mouse over the center of them get the correct coordinates from the Display Text for their X and Y... then change their X&Y to those numbers in the editor and delete the drag rules.
using a drag-able crosshairs Actor... and...understanding that a grid consists of columns and rows...ascertaining the X of the column (across) and the Y of the row (up and down)... allows you to snap to your imagined grid...
MH
Adjustments: Grid size, Snap Size.
Types: Ortogonal, Hexagonal, Isometric.
I think it's not too hard to implement, isn't it?