I am an amateur indie game dev that has recently gone full time development and I often find myself taking screenshots from my Aseprite screen in order to keep the grid.
The thing is that I do lots of 2D grid based game codding and it has a lot to do with coordinates. I love Aseprite, it is simply brilliant, and I think that this feature would really improve the general aspect of the tool by giving people an option to keep their workplace aesthetics and improve technical development speed.
I understand that the final image would have to be re scaled and that quality would be lost for the addition of the grid. But that would be isn’t a problem when you just need the gridlines for support on vector code calculations.