Note that QF fly YVR-SYD seasonally, too. So if you're traveling in that timeframe, you could get in two pretty nice F flights - JFK-YVR-SYD, but of course that eliminates Hawaii. Maybe N. Queensland instead?

One other point is that if you mine the AA timetable (also the OW electronic timetable) you can usually find city pairs in the US where one or the other is not on the transcon list, but where a direct/stopping flight with one flight no. gets you over 2000 miles, 180 TP. For example, at the moment, you can fly EWR-RNO (Newark - Reno NV) on AA 399, which stops in DFW but doesn't change flight number, thus earning 180 TP as RNO is 2390 mi. from EWR. RNO is not on the transcon city list, unlike LAS. There are similar flights around, but not all the time and not always round-trips.