I always thought lalas were closer to hobbits than to dwarves as far as Tolkien's work is concerned, but anywho....
It does feel like if we'd ever get another race, we'd need another smaller race. Something height-wise between lalas and waifus--er, female au'ra and miqo'te. For this, I have two ideas here:
Duar
The "dwarf" race. Broad, stocky (~4 ft or 122 cm average height) creatures of habit hailing from mountainous terrain who pride themselves on harder work, especially in regard to craftsmanship. In addition to their stout and muscular frames, both clans are recognized for considerably excessive body and facial hair.
Soilstep: The more lively and sociable Duar clan. Identified by their smoother skin and facial hair adornments (on beards for men, on eyebrows for women). Better known between Duar clans as merchants, travelers and agriculturalists who prefer life among grassy foothills.
Shardskin: Named for having anywhere from pale to ashen skin so dry that it appears as if their skin is made of rock shards. Unlike their Soilstep brethren, Shardskin Duars normally do not stray often from the mountain they were born in. Known for a normally quiet, solitary demeanor and a habitual obsession for work, regardless of however mindless it may be or how important something else may be.
Pitha
A smaller (still ~4 ft or 122 cm), slender race hailing from various jungle islands throughout Hydaelyn easily spotted by their mane-like hairstyles, a general lack of muscle tone, and curled tails much like the tails found on opo-opo, making scholars question whether or not they are related to either the opo-opo or to the Lalafell, who originally came to Eorzea from islands similar to those the Pitha currently reside. Clever, agile, often aloof, even mischievous at times, Pitha are mostly recognized for their highly social behavior.
Top-top: The more secluded of the two Pitha clans, identifed by their notably more "feral" appearances and thicker tails, and normally residing in structures built near jungle canopies. Despite their isolate habitat, they are still welcoming of anyone showing up in or near their homes, initially through intensive staring while waiting for their guest to talk first.
Sim-sim: The more outgoing of the two Pitha clans, often living in coastal settlements or drifting between islands on villages floating on makeshift rafts. More noted between the two clans socially as pranksters, even having pranking contests to determine who becomes village leader. Physically recognized by more groomed hairstyles similar to those found of other races.
As for another normal-sized race, I'm kinda surprised no one's mentioned the Aegyl....