I think an interaction between Eza and Eighth would be great! Currently, she is tailing Asylum after they showed that they were reckless and didn’t care if they hurt her. Eza still doesn’t want to completely leave them, however, since they were nice to her and she doesn’t want to be alone again. Depending on how their current interaction goes, she may-or-may-not continue hanging with Asylum. If she does, that could make her meeting Eighth less contrived if Stormlightsong is also interested in an interaction. I’m happy to find another way for Eza and Eighth to meet, however.
One thing to note is that she despises birds with a fiery passion, so that could be pretty funny with Seiju. She also adores anything shiny, and the mercury motivator would 100% draw her attention. It would be a straight up moth to flame level of fascination.
Edit: I will say that if you end up needing to choose between meeting Eza and meeting Asylum, I think Asylum might be the better choice.