Moved from Atlanta to Baltimore. Was Delta Plat, now will be flying American or Southwest (DCA or BWI) for my domestic travel, but going to Dulles for my INT'L trips. Would like non-expiring miles. Have an Amex Plat so being a transfer partner would be a plus but not a deal breaker. Would love someone I can status match into to get Star Gold. Flight patterns go between Economy, Premium Economy and Business. 4-6 flights per year - most in business or PE. For instance, this year:

2 Business flights to Middle East
1 PE flight to Europe
1 coach flight to Middle East

Thanks for any help.