In Minecraft Dungeons one only needs to equip a single armor item, but in Minecraft there are four armor slots.
Maybe it would make more sense to provide the primary boosts from armor if you wear the full armor set?

We are looking in making an armor set implementation. We're working together with the person behind Chaos Awakens, who have an armor set implementation, to see if we can take it over and make it core to Dungeons Libraries.

At that point, we still need to determine what armor sets should have what bonus.