I'd prefer to start as Vampire-spawn/half-vampire/Ixalan-style vampire race character.

That way, you can begin crafting the character straight off the bat rather than having to change gears suddenly halfway through the game. I've run an Ixalan vampire in PnP and they are not at all over-powered compared to other races. Obviously that uses a different worldbook to Forgotten Realms, but it shows that playing vampiric characters does not mean that they are suddenly min-maxed characters o' doom.

I think it unlikely that the race will be implemented as a playable PC race by Larian, but I'll lay odds that a Mod won't be far off.