As far as Fidelity incentives, this is what they advertise for IRA rollover of funds outside of Fidelity:
Deposits of $50,000 to $99,999 - $200 cash bonus
Deposits of $100,000 to $249,999 - $300 cash bonus
Deposits of $250,000 to $499,999 - $600 cash bonus
Deposits of $500,000 to $999,999 -...