The tile size of automap is one of the special problems I have seen before during this project which is tiles getting too small for modern resolutions. The size of automap tile is 12 x 12 pixels and it's just slightly too small. Resizing to something like 16 x 16 could make a difference.
The automap routine is quite good at handling the change of size I think. It doesn't yet have any special features I'm planning, it's simply displaying the explored map. The automap could have some kind of world structure where you would select visited places and view the map of them. Writing comments on maps could also be a useful feature.