It is no use blaming the Gandhi family - it is the congress party members who forced Sonia Gandhi to come back. If Sonia had not declined then she would have become the PM of India.
The Congress Party members forget that the most successful and productive rule seen by India under Congress rule is when there was no Gandhi family member at the top of the party. Like the time when PV Narasimha Rao was the PM and Dr. Manmohan Singh was the Finance Minister.