I also have some trust issues. I'd rather not have spyware built into me.
That said if I could magically wave those problems away, I wouldn't say no to improved senses. Eyes that can see any wavelength from radio to x-rays, with different filters for wavelength and polarization available. Same for ears too.
I have actually considered(but not super seriously) getting a magnet implant so I could detect magnetic fields and current flowing in wires, what do you think the limit of that would be if you took it to an extreme?
Mental augmentations are a bit scarier. For multiple reasons.