Just my humble opinion, but centralizing intelligence agencies is the worst possible response. If the problem has been lack of "bureaucratic imagination", adding on another layer of control at the top that has to bring together 57 varieties of intelligence is the one sure way to stifle whatever initiative there may be. The problem is that different agencies were forbidden, by act of Congress, to talk to one another. If you think that was bad, just wait to see what chains Congress throws over this Leviathan in a few years time.
The only thing a centralized intelligence apparatus would be good for would be the unimaginative grinding workaday labor of domestic oppression. I suspect that this new agglomerated agency will excell at this particular function, much to the detriment of us all.
"Strong" is not always a positive attribute in government.
I suspect the current CIA and other intelligence agencies are loaded with MBA types who focus totally on "process" and not "product".
This is why Detroit is still getting it's ass kicked by Toyota and other imported vehicles.
Get some can do people in there and REDUCE the layers.