It is unfortunate that the Executive has grown to such an extent, and our laws accumulated over the years, such that decisions on how to run the Executive branch, and how the law is going to be enforced - has become like one man making defacto law - which is exactly what our Constitution avoids.
I agree that Congress needs to keep an eye on this, but not sure of the best mechanism to do so. A Congressional oversight committee I find preferable to a law passed by Congress creating an extra-Constitutional demand upon the Executive that their internal regulation is all subject to Congressional up or down votes.
JMHO.
As an aside, a presidential advisory committee was considered by the founders. They went back and forth on it an eventually put that function in the Senate under the “Advise and Consent” function of the Senate. That’s not really what you are talking about but I thought it was an interesting parallel to what you are saying.