What features of the CSR do you use? If you aren't using the lounge perk at all, a downgrade to the Sapphire Preferred might be in order. You keep the really good travel insurance perks (primary car rental insurance, etc) and ability to transfer to partners for a much more reasonable annual fee.
The easiest premium travel card to get your annual fee back on, or justify to yourself anyway, is the Capital One Venture X which has a $395 annual fee offset by a $300 credit for travel booked through their portal and a 10,000 point anniversary bonus. Transfer partners domestically are not nearly as good as Chase though.
If you live next to a hub for an airline, you might consider the premium card offering for that airline.
Oh and last, my BIL gets in just under the line on the annual fee increase for the CSR. If you do as well, you can check out which of the new coupons you can actually use and decide for sure next year.