My bet is they'll be the crafting tribe. The Ananta had the potential, what with being goldsmiths, but the tribe we're friendly with is the more combatant one. Plus, they're in the same map as the hostile section of their race, making battle missions much likelier. Same for the Kojin, despite them being merchants.
Meanwhile the Namazu are in their little mansion in south-west Yanxia and are told to be both merchants and in charge of rebuilding that area. I wouldn't be surprised if they'll tie it in with the reconstruction of the Doman Enclave, similar to how the Moogles helped rebuild Bahrr Lehs.

As for liking them, I still have the 'main story' quest line to run through, but the part where they explained the bells was so endearing, gosh T.T I want that minion now.