Villager Defense Variety

Currently, the only form of defense villages have is iron golems. It would be nice if village defenses were varied. Some villages used Iron golems, some had guards and archers, mountain villages use snow golems to knock mobs off ledges. Some villages use multiple types of defenses, some have none and use walls instead.

If these aren't tied to the biome (besides snow golems) then this would give villages a lot of structural and gameplay variety. It would give connotations to the village's personality.