honestly, if you care about balance, the differences between races should be your least problem.
With classes, items and illithid powers everyone can become godlike powerful.
So even if we agree that dragonborn are the worst race, you can totally become a god as dragonborn and murder everything in your path.
DnD was never balanced to begin with and Larian made this worse with their choices of items, special powers and changes to DnD rules.
Yes, I know, however, the argument was that the human racials suck. The dragonborn ones arguably more.
I still have a bunch of dragonborn characters because I pick race based on looks, and I think they look badass. I never play humans, they're boring to me.