Leaving the Party Soon - Recommendations on Travel Card to Replace Club or Explorer

We'll be moving away from the Bay Area (SFO home base) in a few months to near Providence (PVD) occasionally using BOS. Soooo, not much United flying in our future. We will likely become free agents. No reason to keep a United-affiliated card, and what is important to us are: rental car coverage, no foreign tx fees, and trip interruption benefits. Does anybody have suggestions? Thanks in advance!