Legally speaking, there is no path from We The People to the CIA. The CIA was created by Rockefeller using the Nazi Intelligence Agency and the OSS (which was also created by Rockefeller) which suggests that it may not be a "good" agency to begin with. But more important than it's origins is that there is no part of the government (any government) who has Jurisdiction over it. It sits outside of our legal system. The only legal path that the government can take to curb the activities of the CIA is to abolish the government's relationship to it completely (cancel the contract).

This puts all of the activities, at least ostensibly, back under the purview of the executive branch.

I agree that the paths to fuckery there are still rampant, and this doesn't solve the Big Government or Big Brother problems, but it is a step in that direction. The CIA operates extra jurisdictionally. It must go. Whatever comes after is easier to deal with. The only problem comes if people think this solves the problems. It doesn't. It solves one problem only. As long as we keep that in mind, it's a good step.