I’m never going to object to more choices for players, plus I loved Deekin, but similar to points made in this thread about
goblin player characters, if we’re going to have kobolds then I’d like them to be done well with appropriate responses to the race from NPCs which isn’t straightforward.
Personally, I’d prefer Larian to focus on doing the PHB content really well (with extensions where there is a good story reason, or to correct problems or gaps in the PHB) before starting to even think about adding further races. Though, yes, fingers crossed there will be later DLC that will add further races, sub races, sub classes and so on after launch.
Hopefully we’ll at least get to meet some kobold NPCs at some point in the main quest, though.