There are probably things that still need to remain secret, just like corporations need secret to protect their business. However, to insure a minimum level of transparency, the government should clearly SAY what kind of things are going to be secret, so that the scope is clearly defined (for example: locations of nuclear weapons will be treated as classified for obvious reasons), as well as the constitutional limits of whatever secret operation can be carried. Likewise, there should be budget restrictions on secret operations to ensure nothing huge can go out of the radar without public scrutiny.