Great little post from Matt Glassman on how to improve the balance of powers by increasing the relative power of Congress. Some thoughts about how to do this and the tradeoffs are here

You cannot empower the leaders without, at least in part, shrinking the committee system, and you cannot beef up the committee system without weakening the leadership. Strong leaders do not want to work within the constraints that a powerful CBO or other institutional agency presents to them. Likewise, the greatest threat to a strong committee system is a powerful leader. Consequently, the two primary unilateral strategies gain little synergy from each other and may spawn, like Gingrich and the CBO, adversarial relationships over internal legislative power, rather than partnerships against the executive.