Revised Battlerager

My take on the Battlerager subclass, the SCAG version seems a little weak, so I thought that I could improve it.

Spiked Armor

At 3rd Level, you can use a special set of light  armor, called Spiked Armor, with proficiency. It's AC is 13 + Dex modifier, and you gain the ability to use it as a weapon.

You can turn a set of leather armor into spiked armor with 50gp over a long rest.

When wearing the armor, as a bonus action, you can make a melee weapon attack that deals 1d4 + your Strength Modifier piercing damage. This Damage increases to 1d6 at 6th level, and 1d8 at 10th level. 

Additionally, when you grapple a creature, the target takes piercing damage equal to your Proficiency Bonus, if your grapple check succeeds. 

Reckless Endurance

At 6th level, when you reckless attack, you gain temporary hp equal to your Con Mod + 1/2 your proficiency bonus (rounded down). Your Spiked Armor Damage also increases to a d6.

Warrior's Charge

At 10th Level, when in battle, your strength allows you to move with impeccable speed. When you use your bonus action to attack with your spiked armor or entire a rage, you also gain the benefits of the dash action. Your movement speed increases by an additional 5 feet when raging. 

Enchanted Armor

At 10th level, when Raging, your spiked armor's attacks are considered magical for overcoming resistances and immunities. Additionally, your Spiked armor damage increases to 1d8.

Piercing Retaliation

At 14th level, when you are hit with a melee attack, you can use your reaction to deal piercing damage equal to your proficiency bonus, if you are wearing spiked armor and are not incapacitated.