Hefeweizen! We are definitely on the same page Sir. The night is on me if I ever make it to German. Salute!
I will be working on this all day. Hopefully have something to share later. The operation I need this for is much slower, manually controlled between LED changes approximately 10sec to 2 minutes apart. I think option B) is where I'll start. I will create global variables for each x,y LED and have the value in the cell trigger the variable/turn on the LED until the next row/cell is selected. Unfortunately its not for anything as cool as animation or imaging. This is to control LED light through hundreds (124x2)of 1mm fiber optic end light cable strands and turn off/on individual strands from each matrix from Excel. There are some photos in the album attached above showing some 3D printed parts securing the fiber strand. When I get the software operational, mechanical won't take long to finish so I can share the complete project/purpose, (o.-).
Off topic, Are you signed up on Code Mentor?