EA wouldn't have continued to purchase Airbus products, for several reasons:
1. The A-321 and B-757-200 are competing aircraft, and since they already had a fleet of B-757 aircraft (being the launch customer), they would continue to purchase both -200 and -300 equipment.
2. Their relationship with Airbus Industrie had cooled over the years, as they experienced higher-than-normal dispatch reliability problems with their A-300B4 equipment. Airbus was less than cooperative with EA by the time they were on the ropes, especially since they didn't "need" EA anymore due to increasing orders from other U.S. carriers.
3. Marty Shugrue (EA's bankruptcy trustee) had entered into several MOUs with Boeing over using Boeing equipment going forward, assuming EA survived and needed new aircraft.
4. Continental Airlines is where they are today in large part due to Eastern Air Lines (the scavenging of planes, parts, people, equipment, and routes). If EA existed today, it's likely that they would be around INSTEAD of CO. Since CO was already a large Boeing/McDonnell Douglas customer, it's unlikely that a succeeding carrier (assuming EA and CO were integrated, with EA being the surviving entity) would change their fleet significantly.
These things being said, EA's fleet today would have likely looked something like this:
B-777 and larger equipment really wouldn't have been necessary for EA, and none of their routes (assuming they had not expanded further) would have required ETOPS certification. (MIA-LGW had been suspended long before they liquidated)
"In this present crisis, government is not the solution to our problem - government IS the problem." - Ronald Reagan
Comments made here are my own and are not intended to represent the official position of Alaska Air Group