I am trying to get as many miles as possible on DL this year to roll Diamond over to next year. Without knowing what 2015 will truly bring, I think this is the safest bet for me.
I scored on the DL fare glitch and bought a bunch of RT's in first, this got me ~50,000 mqms.
Spending on my DL Gold got me the waiver right away. (will switch my Gold to a reserve in the last few months and get the spend, another 40,000 mqm)
Added a DL Platinum and a DL Biz reserve. Thats good for another 65000 mqm.
Business travel and other travel will give me around another 50,000 mqm.
I'm planning two MR's this fall to get the last 50,000 or so.
This will set me up to roll diamond plus about 10,000. If things turn out ok next year, I could then get another 80,000 MQM from spend alone, add in travel and I would be good for diamond through 2016 as well.*
*All of this contingent on MS still being useful enough to spend $170,000 to get the MQM on the cards (and even make money doing it)