Absolutely yes. For example Election Commission has censured Salman Khurshid for violation of model code of conduct but the Congress is showing its utter disregard for it. If the election commission had power to punish for contempt then it would have been more effective.
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They have enough power now it self. Only the person who is made to sit in that chair matters most.Before Seshan we never knew election commissioner has so much power and authority . He made all of us to sit and take note.
Even if we make all the above Statutory bodies more powerful by suitable amendments, politicians will see to it the chiefs will always be selected based on their ability to serve their interest. Ocassionaly they make mistake and we get eminent people like Sheshan....