We are in a similar situation and have been scaling back on travel cards and concentrating more on CB cards.
While we have a large amount of cards, CSP and Freedom(for 5% exclusively),along with Citi Double Cash and Amex Blue Cash are our active general purpose cards. Costco is our gas card,unless Discover or Freedom offers the 5%.
SPG Amex is used exclusively at Marriott and Starwood for now.
As our travel cards' annual fees come up, we have been requesting waivers or downgrades to the free versions, if the annual fees don't provide at least their value in benefits- this way we can put an occasional charge on them to keep travel accounts active.