The only instances of Cyberware being used in the movies (Vader, Luke, Grievous, and Vance in the comics) seems to have been when someone was badly hacked up and as a straight replacement for the bits they lost. Or maybe, as Lobot, when they REALLY need something to do their everyday jobs.
But in EoE, there's no real reason why anyone with the credits wouldn't want +1 Intellect, Agility and Brawn for 10k each. That seems like a big deal seeing as you can't even raise stats with XP, and it doesn't have any drawbacks save the cost.
When Luke lost a hand, he just replaced it, he didn't get a full body upgrade. It seemed out of place to me, so I restricted these to droid only upgrades.
There seems enough anti-droid sentiment in the universe for there to be a taboo about replacing healthy body parts with tech. And that way, when they meet someone like Cratala, she comes across as a real oddball.