>>111726321) Extremely Unlikely
2) They aren't human, they would have "Catgirl rights". Depends how you modify their brains. The addition of ears and perhaps larger eyes would result in less cranial volume, meaning their brain on average would be smaller than an average human. However, architectural changes within the brain could be performed to make them more efficient with what they've got, meaning that a genetically engineered catgirl could possess perfect memory and a cognitive system supporting of a 150 IQ. What it ultimately boils down to is their manifestation of an Ego/Independence. You could design them to be superintelligent and submissive at the same time, yearning sex and attention like humans yearn food and water. They would have no qualms being your "slave" because they would not be physically capable of dissenting, their brain would not be able to do it. However, the average person is a product of both their cognitive "Hard-wiring" and society. American society fosters individualism, Chinese fosters familial relationships, etc. Considering that they could be grown in a laboratory, and the availability of uncommon elements and compounds, you could overhaul the human design and create a system far more durable and capable of repair with the elemental diversity of a lab-grown setting.
Good luck. If anyone can speak about this topic, its me, and trust me when I say we aren't close to having catgirls. 50-60 years in the future at best, or perhaps never.