Colours, colours everywhere!
Each map is divided in quarters, one for each gemstone: diamond, emeraly, ruby, and sapphire. Gemstones will always appear in that order on the map, from the upper-left corner to the lower-right corner respectively.
As an additional visual cue, the colour of the tiles will depend on whether or not the gemstone is still hidden in that quarter. Don't panic, the difference will be much more colourblind-friendly once the graphics are done!
Also, to reduce visual clutter when multiple characters are on the same tile, characters who are not currently playing are now displayed as a small number corresponding to their position on the roster.
Eventually, picking up those gemstones will actually do something useful, too.