Its just a better balance on the dragonborn race overall and brings more flavor to them makes them feel even more unique to species. The 3 subraces have there own unique traits also gives players a little more flavor the desin itself almost feels like it was ment for balders gate 3 even though its design from what is gathered is for dragonlance campaign setting the subraces themselves feel like they were built for bg3. The racials are great the moving of ability scores minimizes complaints due to flexability. The racial skills are all great unique abilities. The feats are well done.

Chromatics with complete immunity to a damage type for a short time, metallics getting the second status effect breath, and then gems getting telepathy / limited duration flight as a unique racial. 1 Minute flight could be super useful for transitioning terrain in game. The immunity to a damage type is a great flavor because all the resistance in the world doesnt beat immunity and the duration is really strong for certain areas such as the burning bar in chapter 1. Having a second breath with a aoe knock back great for tactical perspective and its solid having a stun as well to temporarily disable creatures like the bullet making it easier to take it down in short duration its up. Reducing incoming damage for short periods in general is great as an ability at low levels. Any damage type immunity is going to be strong fire even more so. Fire then acid and lastly poison being the most common damage types in early access part of the game thus far. Where other abilitys like psychic resistance may be useful much later if facing mind flyers. Force Thunder Lightning and cold are currently on the lower end of the spectrum due to lack of enemies using those attacks. But also means less likely to have resistance issues.

It would be nice to see them tie your colors as a restriction into your breath weapon type as well and stick to the true nature in case of dragonborn not allowing a red dragonborn for example to breath lightning as its basically the core of the race that there color ties into there breath type.