All characters are proficient with unarmed strikes by default, and pretty much anyone can gain access to the Unarmed Fighting Fighting Style to have a d6/d8 unarmed strike at level 1. Losing proficiency with armor and weapons make a large swath of magical items impractical.
Both Fighters and Monks are going to be doing more unarmed damage per round due to Extra Attacks and Flurry of Blows, while also having other abilities to augment those styles. Your Path of the Brawler is essentially dependent on grappling to function, which means that it will be essentially useless in ranged combat, against large groups, against Gargantuan+, and against creatures immune to grapple.
Basically, it's going to struggle to shine in real play, and will step on the toes of both Monks and Fighters.
As for "balance": It's probably underpowered.
Suggestions:
Define your Primary/Secondary Roles. Think about a character from popular culture that might serve as inspiration. ("The Hulk?") Avoid over-specializing. Figure out which classes/subclasses most closely resemble what you are hoping to achieve. (Try to build it with existing resources.) Think about Best/Worst case scenarios. Think about Multi-classing abuse.
I created a new sublass and i was hoping for some input to make sure it is balanced.
https://www.dndbeyond.com/subclasses/857052-path-of-the-brawler
Go easy on me.
All characters are proficient with unarmed strikes by default, and pretty much anyone can gain access to the Unarmed Fighting Fighting Style to have a d6/d8 unarmed strike at level 1. Losing proficiency with armor and weapons make a large swath of magical items impractical.
Both Fighters and Monks are going to be doing more unarmed damage per round due to Extra Attacks and Flurry of Blows, while also having other abilities to augment those styles. Your Path of the Brawler is essentially dependent on grappling to function, which means that it will be essentially useless in ranged combat, against large groups, against Gargantuan+, and against creatures immune to grapple.
Basically, it's going to struggle to shine in real play, and will step on the toes of both Monks and Fighters.
As for "balance": It's probably underpowered.
Suggestions:
Define your Primary/Secondary Roles.
Think about a character from popular culture that might serve as inspiration. ("The Hulk?")
Avoid over-specializing.
Figure out which classes/subclasses most closely resemble what you are hoping to achieve. (Try to build it with existing resources.)
Think about Best/Worst case scenarios.
Think about Multi-classing abuse.