After Effects should have Time Snapping

For many motion graphics projects, it would be nice to have temporal snapping (an (invisible) grid in the timeline). Currently we have to position it manually and watch carefully to the time indi-pronecator, which is time-consuming and error-prone.

We should be able to snap to whole seconds, or set our own time spacing grid.
And when introducing this, it would be nice to have a cursor-key-time as well.
Nudge 5 frames in time. Or whatever custom setting.