It seems like combining the Amex Business Plat with automatic 2 cents a point redemptions and 5x on airline purchases with the Everyday Preferred at 4.5x on groceries and 3x on gas along with 1.5x on non bonused spend is the best new weapon in credit cards.
It is probably worth keeping the Chase Sapphire Reserve for the 3x dining and on all other travel. Those three cards would carry $995 in annual fees but $500 in travel credits. For people with significant credit card spending, this seems very much worth it.