While your choice of race might influence your roleplaying, it is really a very small part of the mechanical crunch of your character.
And that's the hard part we want WotC to create for us. The crunch, that is.
More build options and subclasses and especially "depth options" that can enhance and complexify existing builds like spells and feats and entire new subsystems (like metamagic, superiority dice, deepened high-level play, epic options, and entirely new things like psionics or warlord-y stuff etc...) is what the game lacks in its current state.
In comparison, whipping up a race (or background etc) is simple. We can do that ourselves.
WotC has far too long gotten away with only the "easy crunch". They point to yet another meh subclass when we ask for crunch, when it is entirely new classes and their subsystems - the difficult design - we want them to do.