That'll be a -1 from me. Too many races get Darkvision in 5e - so many that it becomes more common than not, and turns not having darkvision into a punishment rather than darkvision being a nice boon. Give dragonborn something else unique instead of darkvision, unless you're going to give every single race darkvision.
Out of the 9 PHB races, 6 races (Dwarves, Elves, Gnomes, Half-Elves, Half-Orcs, and Tieflings) get Darkvision, while only 3 races (Dragonborn, Halflings, and Humans) do not. And then 3/4 of the additional BG3 races get it: drow, githyanki, duergar, deep gnomes.
Imo this problem stems from removing low-light vision from D&D, and then (somewhat arbitrarily) deciding which previously low-light races would get darkvision vs normal vision. Why do elves, half-elves, half-orcs, and gnomes have darkvision?!? Their races haven't, as a whole, lived underground for hundreds+ of years.
