If you want to see what WOTC's values for race abilities are, you can search for the work someone did a few years ago.
Darkvision, tools, and languages all ended up with a cost of zero.
Each ability point is 2 points (because that was the arbitrary starting point)
Feat at level one is 6 points.
Skill is 2 points.
No need to reinvent the wheel here. There was some iteration done after the Guide to Monsters came out and some scores for some things changed. But the above stayed the same. If you think Dragonborn breath weapon is overvalued you can always give it a value you do think is appropriate and then adjust it.
The Breath Weapon was given a value of six points. I don't disagree with the analysis that derived the cost. I disagree that it should even cost that much. Give them another +1 somewhere and that makes the breath weapon 4 points, for example.
Darkvision, tools, and languages all ended up with a cost of zero.
Each ability point is 2 points (because that was the arbitrary starting point)
Feat at level one is 6 points.
Skill is 2 points.
No need to reinvent the wheel here. There was some iteration done after the Guide to Monsters came out and some scores for some things changed. But the above stayed the same. If you think Dragonborn breath weapon is overvalued you can always give it a value you do think is appropriate and then adjust it.
The Breath Weapon was given a value of six points. I don't disagree with the analysis that derived the cost. I disagree that it should even cost that much. Give them another +1 somewhere and that makes the breath weapon 4 points, for example.