Like over at Amex, I think Citi wants people to hold both cards.
I am not convinced that Amex really wants me to hold both cards (Plat and Gold). They aren’t offering me any incentive to add the Gold card to my fleet of cards (family rules). They’d probably prefer that I use my Plat as my primary card for all the categories with mediocre earnings instead of optimizing my spend to use the appropriate card.
And if I had the Premier and the new Elite card, I think I would only use the Elite card two nights a week for dining, and for the coupons. Not really worth paying an AF of $600 for the privilege of redeeming those coupons.