#It is honestly fine.

I've played and am currently planning a campaign where Dragonborns can breathe how they want, and honestly, the world hasn't crumbled in itself, It is better for helping dragonborns be more versatile to a skill that you honestly don't have the ability to spam for starters.

Overall it won't really unbalance anything much, at least in my personal experience.

It is honestly fine.

I've played and am currently planning a campaign where Dragonborns can breathe how they want, and honestly, the world hasn't crumbled in itself, It is better for helping dragonborns be more versatile to a skill that you honestly don't have the ability to spam for starters.

Overall it won't really unbalance anything much, at least in my personal experience.