a new iteration starts with an idea: have a PCB that replaces most of the handwiring

first task: figure out the (now 2D :-( ) switch positions

to get there the outline of one hand is traced on paper, digitized and pulled into kicad as user-drawing

then  (after creating the matrix schematic) the switches are positioned in relation to that outline.

the pcb-cut border can also be drawn up, to have an idea how/where to place the thumbcluster later on.