Totalitarian architecture. Angular, defensible masonry over sleek, sloped carpentry.
Taking it slow. Provoking into attack typically does better rushing.
Underground engineering. Well-lit tunnels are much safer and often cheaper than any surface construct.
Farmability. One of primary concerns relating to any feature.
Practical mobs. No annoyances taking up space and processor power.
Generalism and simplicity. Overly complicated and specialized concepts hardly ever come into fruition.
Yeah I guess. Normal mobs are easy anyway except for Endermen (well on Bedrock Endermen turn out to be easy too). But I can see crossbows being a necessary thing for a raid for instance, so good that pillagers drop quite a few of them.