A recap of my latest churn:

Currently hold US MC, my 3rd in as many years. Spend pattern on this one was very light, but with a smattering of activity in recent months so there was at least a little recent usage. Anniversary miles posted very recently; AF has not yet hit.

Application for the 30K/AF-waived-1st-year/preferred-only offer resulted in instant approval (w/higher CL than existing card).

I have no status with US. FWIW, I think I have 2 hard pulls, both from non-Barclays apps, in the past ~4 months. (Definitive stats at home, so I'm doing this from memory.) I have no other Barclays cards, and my last Barclays app was a year ago for current US MC (#3).

^