Classic has a feature where you can plan out your hunt/draw on the map, and CotW could benefit from this a lot. I am going to start grid searching for the haggis and there's no way to actually mark up your map aside from waypoints, which is an inefficient method because you can only have one at a time and it does not save upon closing/opening the game.
I don't have any screenshots of Classic's system but it also shows the path you have taken whilst hunting, another feature that can be implemented.
Attached image is a quick mock-up of a grid I threw together in Paint Tool Sai 2, and another with red being the path you have taken and yellow being a section of the map marked out to explore. These options can be toggled on/off, having the plan visible on-screen outside of the map menu can be toggled on/off, and the colours can be changed like with the inactive/active tracks. The plan will be shown like a POI that is visible as you get within 100m of it. If anyone has a screenshot of the mark-up being used in Classic feel free to send it below it'll be helpful :)