“There’s the potential to not only bring someone up to a certain level of function, but actually enhance their function, make them smarter or faster than they would be otherwise...
...and we would want to do this because?? Seems to me, that Armies and Armed forces in general nearly always opt for the least smart option! - which in this case would be to make themselves smarter.... than they would be otherwise....

...and that's defined as a "certain level of functioning."