Well, generally the location itself or the characters there will gain an additional benefit from being at a location. Think of locations in this way like mini-combos within your deck
If your deck consists solely of Amber Ink, you cannot include Pascal, Garden Chameleon, as it also requires Amethyst Ink
In Magic: The Gathering Limited terms, high-cost inkable characters are like land/bomb split cards
So to sum up: Locations have an ink cost
They'll also allow us to visit our favorite Disney locations, from Pride Rock to Maleficent's Castle, and progress the game's story, as we see characters explore the mysterious Inklands
This gives you the chance to play two cards for one, which is incredible early in the game