I’ve thought a sort of grid, added to the Options layout for images, would help set/compare in/out points between different layers. I’ve attached a rough sketch…maybe tiny no.s could be added?
I submitted that feature request some time ago – still waiting to see if it ever gets implemented.
I agree that some type of “grid” (kinda like a “tab stop”) be incorporated to allow for consistency from one layer to another, as well as from one slide to another. The in and out points should be able to “snap” to those grids, and also be allowed to set to locations between the grids.
@raymackt: Thanks for your feature request.
@stantastic: Thanks for your feature request, again. 
It will be implemented in the next update of FotoMagico.