I’d say it all forms from the demand and price. If customers were interested in buying twice as expensive packs but with everything included then creators would be adding blueprints. But in general, people don’t like to buy costly assets even when the expensive ones provide better quality. And UE algorithms motivate creators to post more often, rather than more complex. Would you be able to create a model with the animations and set up blueprints for it less than in a month to keep your sells? I bet not. We don’t have much of non-humanoid creatures on the marketplace because they are very time-consuming. Push creators to do locomotions and we’ll have none variety at all. But also there are plenty of generic locomotion systems for different creatures. Wouldn’t it be better to buy one generic blueprint for many assets and tweak a bit the setup than buying each asset twice its price with nearly the same blueprint attached to it? 