Manish Tewari, Prithviraj Chavan, Anand Sharma and Bhupinder Hooda are the members of the pro-reform G23 group who wrote a letter to party's interim president Sonia Gandhi.
Kharge or somebody else, whoever becomes the chief, he will only be a face to show, Sushil Modi said.
No one from the Gandhi family was present at the All India Congress Committee headquarters when the leaders filed their nominations for the election.
He said the answer to the Congress' current challenges lies in a combination of effective leadership and organisational reforms.
In a major setback for former Bihar Chief Minister Nitish Kumar, the Patna High Court on Wednesday termed his re-election as JD-U legislative party leader unconstitutional.