Decay. Higher you're ranked..more coveted position...heavier the decay. Drop more than 10 ranks from decay ....your ass drops to 101, no questions asked. 'B-but I was on vacation!" ...not my problem. Impliment this along with the OP's original idea, all will be well. Other wise, unless you were smart enough to be in Feast 1st week instead of say PotD Part 2 for new patch, its same problem all over. This keeps the ranks from stagnating. Mighta been skilled week 1, are now garbage week 2, and have horrible luck week 3...thats part of the gamble, just keep stuff alive, passionate, and stressful ;p