I don't think it is a good thing in principle. Much of the point of creating agencies like the FTC is to prevent Congress from having to deal with the minutiae of every single thing that ought to be regulated.
Of course its a good thing. We in theory have a balance of powers between the branches for well founded reasons. Give too much power to one branch and its easy for them to rule by themselves and create tyranny. Non elected officials shouldn't be able to create law. That power should remain exclusively with the legislature. Give it to people who are not accountable to the voters and they can and will start working against the will of the people. And it will happen quite easily.