SpaceAlex

The Starlight Entertainers recruiter in the Lower City cantina would make a good replacement. He uses the same appearance as at least several other NPCs in the area, and has enough dialogue to give the Chandra-fan some decent screen time.

The droid store owner on Dantooine would also be good. Craatis Yurkal had a lot more dialogue (and better inventory) than he did, which made him seem like a pretty boring NPC in comparison. Making him a less common alien would alleviate that.

Either of the angry Duros (the ones complaining about Czerka and Helena) on Tatooine would also work. They both have similar dialogue (and identical appearances) but were supposed to be different NPCs.

Lastly, the Rodian pazaak (sp) player in Dreshdae would also be fitting. That area already has two other Rodians with large amounts of dialogue, and doesn't feel very diverse (Mika Dorin could be replaced instead, though it would take a while to change all the VOs in his dialogue).