Uhm is Llama wool even a thing IRL? I think they only shave alpacas (they should add them by breeding llamas for at least 5 generations of domestication :P)
Yeah a bias towards things that make sense irl is nice, but I would definitely love at least a few more fantastic options. Don’t dare to get close to my giant kashmir goat cavalry!
Okay for the easy option: what if other animals exist too and are a bit better at each single task/production but you are not forced to use them because you could also use the wolpertinger at the cost of slower production? All villages just herding only one animal and always the same seems to get stale fast. Or do you plan to abstract all those items into “animal product” on easy difficulty?