This may hard to understand, but I think a small portable magnifying glass would be nice. I know you can use the mouse cursor to zoom objects closer, but I don’t want to zoom up the whole board when playing, only a particular section (ie Heroes of Normandie boards with their defensive modifiers…)
Makes sense to me, it’d definitely help, especially for people with poor eyesight and/or for smaller screen sizes. This way, you can watch the entire board while looking at a small piece of it in particular!