Now one problem, what about depth? No, wait, the brain manages that... duh lol

I think it's okay to install an artificial eye, robotic arm etc. for the people who truly need them but I would limit to that: we shouldn't be playing god when it comes to humans. Eventually it would get into point where there are "normal" people and people with bio-technical add-ons, 1st and 2nd-class citizens, and then some demagogue would come up with ideas like "racial purity", "superiority of new huma race" etc.

So instead of having millions of incredibly complex and easily reparable machines that self replicate at a steady rate as they die off form (cells) form an eye that can see the entire visible color spectrum, something made out of electronics which are on such a low level of complexity that if one part breaks and it will break, it has to be removed and replaced whereas an organic eye's cells die off and replace at roughly the same rate at all times. In the future, organic eyes could be improved as well through genetics. It saves a lot of raw material at the least, and gives an eye that you can really feel is your eye. Also, please watch the video, the stuff they show is incredible.

We will all turn into robocops eventually.

Biological eyes already see better than any technology to date (Better than those huge 10MP cameras and HDTVs). I don't thing you can improve on nature too much, or even if the brain would be able to tell the difference (Ex: See better than a regular eye).

the only way to really improve on sight are to allow for better muscle control over the iris so you could refocus more easily, and to wire in possible over lays through the dream state, think a video game HUD in real life, albeit it wouldn't be very useful for the average joe in that way, it would be useful for soldiers, though dependence could cause issues: See the game- Haze. Using the power of the brain to render over lays onto sight is what I see as the future of computing, instead of surfing the web on a phone, you surf it while you walk, instead of putting on earphones, you can hear it all in your head. The danger though is spam and viruses causes havok on social and traffic interactions.

I believe something lke this already exist.
Yet the user is still almost blind, but he is able to see.

Seen it in a documentary a while back.

That hardly matters, we dont pass up jobs because we dont want to use the car and would rather walk, even though it can break down any moment and leave us "crippled". With the kind of infrastructure the first world possesses, augmentations would be easy to replace and repair. Its not like people would be walking around with borg-like structures on their face, its more than likely the eyes would look real at first glance, or even at close glance.

The thing is, a mechanical eye will never be better than an organic eye, it's simply a huge difference in complexity, and companies right now are working on the technology right now to actually regrow eyes, limbs, fingers, toes, etc. etc. directly on and from the body basing it on natural systems that we are all born with, simply by stimulating processes that become more dormant the more we age. Given the choice between a mechanical eye and regrowing the old eye minus any defects, I'm pretty sure people are going to choose the organic eye.

If an artificial eye could offer better image quality, other functions, and better durability than a conventional biological eye and I needed my eyes replaced for whatever reason I'd probably go with the artificial option.
On the other hand they might find out how to remove the limits on the amount of times things can divide, near-immortality, baring a violent death, doesn't sound too bad either.