Well next year will be interesting for me. I just reached Gold Elite with NZ Air Points and was comped to PremEx a month or so ago for 99 and 2000. I'll be moving from New Zealand to the US and my new employer prefers AA and have comped me Platinum.

So I think it will look something like this:

Use a mix of UA (whenever possible) and AA within the US to keep PremEx and Platinum, Use NZ on long hauls to LHR and AKL from LAX/SFO to maintain *G on NZ.

Maybe I won't have my FF number in my profile and i'll submit boarding passes/tickets every 3 months or so, to balance the earnings between UA and NZ...