I'm also thrilled about this but I know that:

• we really don't know much of our brain. We know something called zones, we know how to "excite" them, to use small currents, to have some improvements but mainly it's very very unclear how it functions at a deeper level. Deeper than neurons, of course. I can bring the arguments of the science magazines I read these years or the output from neurology/neurochirurgical doctors. But no. Just think at a simple fact: why the patient is awake when a surgeon operates the brain ? Short answer: we are afraid of "breaking"something there. And it's not only a problem of very fragile environment and tiny organs.
• neuroplasticity is the shit. The brain can change. He is able to alter the learned paths. Very useful. We can "domesticate" this small and important part of ours:the brain.
• any device requires many tests. Mamy Test subjects and many years. And results. Of course verificable results and reproducible experiments. And patience. And hard work form multiple international teams. And on top of that we are playing with something mainly unknown and very fragile.

Changing the behaviour is not easy to do because the side effects can trash all the hard work.

But I'm positive as everybody, of course.

Cheers