I do see a niche for maybe a small race that isn't "cute," but maybe more "cool". Wow has dwarves and goblins, GW2 has asura.

Some players like the "tiny but fierce" or "spry rogue" archetype, and I hate to say it but lala only *ironically* fill these roles that could be played totally straight with, for example:

* a small monkey-like race like kobolds
* a small fish-like race like sahagin
* a small bird-like race like ixali

I don't think a new race is necessary. And I don't think any of the above options are particularly likely because we already have so many beast tribes hitting similar beats. However, looking back on the game in retrospect it does seem like a pretty large design hole that, imo, would have made the game much more marketable to western playerbases who generally find less appeal in "cute" races.