If this technology gets to the secret services or terrorists, it could have very serious consequences. Why geneticists have banned the experiments on human beings? Because technology allows us to artificially raise soldiers. I think you need to ban this technology for the same reason.
Tech like this will arrive at some point. It won't be possible to uninvent it either. Never in human history has everyone agreed to not research and create something potentially advantageous. Someone, somewhere will do it.
And it will be the end of us at some point. There's so much that could go wrong in this project. If I were asked to participate in the program, my first thought would be:
-what if I get a virus from your network that will infect my brain?
Imagine in future being able to receive messages and calls directly into your brain, while doing something else. Sounds nice, but what if someone annoying starts to call you while you're sleeping or sends you a bug that taps into your thoughts?