Let the 3.33% flat rate run uncapped
The 5 RP / ₹150 base (3.33% at 1 RP = ₹1) has no earning cap — unusual at this tier. Push all non-devalued retail through this card: ₹10 lakh/year clears ₹33,333 in RP, easily offsetting the ₹5,900 renewal after the 6,000-RP renewal bonus (worth ₹6,000).