Barbarian Path of the Brawler: For when you wanna hulk out and suplex a giant.

[Old Harry MTX]

I love the idea of more utilization of rage bonus damage numbers, and also like the idea of giving a couple of uses without having to burn rage uses.

Out of curiosity what brings you to suggest using rage bonus over advantage? Mathematically until higher levels it's about the same as far as I understand.

Yes, actually I prefer this ability to be mainly out of combat. You could add always your rage damage to Charisma checks (but not saves) + your proficiency bonus if you are proficent in a certain skill, and maybe gives also advantage while raging...