Make the animals appear random on the islands, today’s everyone knows where to find chickens, pigs, and snakes.(by memory or online maps) If they appear random , the exploration and trip experience will improve.
Don’t be racist ( kidding) make random the amount of gold you earned, not by the animal color. This days everyone wants gold chickens and gold snakes.
And the white? The red? The blue? The pink pig? That will end to respawn on the island to find the animal with the correct color and force the exploration.
More animals = more money. So now the money earn depends on the amount of animals and the difficult on transport, so if you earn a voyage with a lot of animals you will have more money.
Small example.
Level 1-20 : more chickens less pig in total less animals to transport.
Level 40-50 : more pigs less chickens in total more animals to transport .
If your shopping list have pigs the amount of gold will increased , because the food difficulties that pigs has. Snakes will be the middle, and chickens the cheapest because are the easiest to transport.
Exploration is the key of the game, if you don’t be force to explored you will be bored like todays, if you explore, the chances of find a threat will rise.
