Leather Armor Buff for the other three parts

While leather boots let you walk on powdered snow, it would be nice if the other pieces also had a buff:

Pants: Make you immune to damage from sweet berry bushes. Other Armor is exposed due to joints.

Tunic: Reduced damage from punch-attacks. Zombies, Endermen, and some other early-game mobs count. Good for fistfights, bad for swordfights.

Cap: Reduced damage from falling entities(anvils, dripstone,etc) and elytra crashing, making it slightly useful in Endgame as well. It reflects how early pilots wore leather caps.