which leads naturally to the possibility that more power will be needed (could be utilized) in the future.
I doubt much work been done to see where the next appropriate level of ‘upsizing’ would be on a future Shield board, but perhaps that might be worth beginning to investigate…
or a ‘power agnostic’ shield, that doesn’t require a motor’s direct current into the shield?
or some sort of stacked ‘shield per axis’ setup?
I’m thinking about that kinda current (per @blurfl 's link) per axis and you’re talking real amperage… not that X-Y needs more power, but thats a whole other thread…
My point is to begin the discussion of how best to prepare for the possibility. .