Bruce,
Somewhat like you, I made a few "miles allocating" mistakes this year...I flew over 60K on AS (qualification for their MVPG is 35K) before I realized that I could have been pumping some miles into AA, where I will be attaining EXP for '03 by 12/16/02.
Thus, I "wasted" about 25K miles, having to schedule some MRs on AA to get to EXP. The cost of this mistake wound up being about $1800, but what the hey, the airlines need my money, right?
Next year I'll be a little smarter about miles allocation!