they won't even cover all PHB races. Might be a dealbreaker for me.
About the datamined story
That you just happen to end up with so many Shar worshippers sounds rather contrived.
All evidence so far points to all PHB races being in the game, including Dragonborn, Half Orc, and Gnomes (with Rock, Forest, and Deep Gnomes subraces) being in the game by full release. Heck Gnomes have already been modded in. It's just likely that in the case of Dragonborn and other Beastial races, faces can't just be mapped and scanned by more human looking races with tweeks added, they have to be done custom by artists, all that extra work takes longer, so they weren't ready for EA yet.
And far as Sharrians in the party, that is likely not an accident, but rather Shar's influence or one of her more powerful servants influence on events.