Slowness Effect for New Armor Types and The Mace

In addition to the new meancing weapon, the "MACE". It brings a new heavy items to Minecraft with some new aspect. Since it has a perculiar item called "heavy core", HEAVY! And what does heavy thing does? It SLOWS YOU DOWN! So from a perspective, there must be low speed for the new weapon. Now, lets talk Heavy Armor. Heavy Armor is basically from the "heavy core" item that is melted only using blast furnace, with buring source of lava only. The "heavy core" item will be melted into heavy plates. And you must put it into smithing table. And uses NETHERITE ARMOR! Basically OP! In addition to this, Mojang need to make a new heavy upgrade. Since the Heavy Armor is now stack with more Heavy Items, because netherite armor is incredibly heavy with one netherite ingot contains 4 golds. Then, there must be a low speed for the armor, for a start Mojang can make the player wearing one part of the Heavy Armor can't sprint or run accept walk obviously. Bonus+++ Make every part of an armor has different speed effect depents on their types Note: *Don't give the effect on the screen "slowness effect" just make it have a lower speed *Don't ever give attack speed for Bedrock Edition!