Larian has set a good standard with OS2 where all races are very different.
but if you go with all PHB races, you end up with a lot of races.
So far Dragonborn have only been featured in Neverwinter and DDO.
in DDo they were added in retroactiveley relativeley recently, in Neverwinter they also werent in at release despite beeing a 4E game where they are a core race, they only got added with a hefty paywall.
Point is, dragonborn are a lot of work, specifically because of the heads.Far more work than making another recolour of elves.
If you look at NWN2 and the races that were added to that over the course of its expansions, youll notice a lot of recolured humans.
Its kind of the fate of DnD based CRPGs.
Obsidians games had their own world, but decided to go with recoloured humans.
I guess its a CRPG tradition for one reason or another.
Still thinking larian can pull it off, question is wehter or not they will