Thanks a tonne for the feedback! We've had a lot of people say the same thing, and we've been smashing out some updates for the game to solve those issues. Whats fun is that we are making exactly what you are asking for here... :P We have some stuff coming up that we hope will flesh out the game a whole lot. We have added more interactions on the farm, you will now get attacked by pests/predators at night, as well as new buildings and chook types that will mix things up a bit. We are going to have a spooky event any day now that will start to introduce all this stuff... as well as the first Legendary Chooks.
THEN we have Chook Races coming. You will be able to train a chook (and eventually a team of chooks) to compete in races. :D
Ofc the races will have a bunch of cool rewards and progression and all that cool stuff too. And even more Legendary Chooks!