Did the deed and downgraded after a good 2+ year run with the CSR. Have PP thru AMEX Hilton Aspire and the 3x/2x points on a $99 AF no FX from the Citi Premiere hits the spot, as well as 4x points from the revamped AMEX Gold.
Just an extra DP if it's helpful: had a pre 2017 CSR so my $300 travel credit reset on Jan 1. So I booked a hotel stay coming up to get the credit, then just called to downgrade to the Chase Freedom Unlimited and the change was made in my online account same day, and the $450 annual fee was refunded the next day.
My hotel booking where I got the travel credit is still confirmed so it looks like this all still works just fine if you time it well and have an older CSR.