Well the fishy guy was recycled from that one bounty hunter on Cad's team. The elder Jedi was kind of lame, certainly not as cool as a dozen other aliens. I'm not sure if this guy's species existed before, but I think they could have gone with an existing species that looked a lot cooler and been better off. And the jumper girl didn't look too great either. They had a good design to go with, but what they ended up with could have been better.
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And the jumper girls side kick was less than spectacular with those vertically lidded eyes.
But yeah, overall, I would say the new character models were a little poor. I think they might have been better if they'd pulled in some of the lighting effects they used heavily in Holocron Heist. If you go back to that episode, they really made the characters look awesome with sunlight effects and shadows. I didn't notice that in this episode (if it was there, it wasn't memorable).