That suggests the two of you fly a combined 300,000 butt-in-seat miles on CO per year. (25% * 300k = 75k). You can actually earn Platinum status with as few as 50k per person if you are fly on Y/H or first class fares. I would suggest you spread your business around to other carriers, that way when one of them makes an adverse change to their frequent flier program, you won't be so impacted.