zbrent is crafty and wins at all levels. He puts 10 year minor league vets in rookie- stuff like that. I dont think its cheating and his staff is a good idea.
I always have a couple of relievers at 100 innings. I hadn't considered his idea, but something similar. These are fake ballplayers and their ratings aren't necessarily unrealistic, just misunderstood. Just as easy to use a 10-70 dur/stam guy at closer as it is to use a 70-10 etc.
After awhile experienced owners know how to use different guys. I myself like to keep my minors moving and have all rookies in rookie unless I run into injury problems. I dont like people who put multi year vets in rookie to win playoffs. Is it cheating? no. (The vets in rookie may or may not be 10 year vets, but I've spotted maxed ones on numerous occasions w/ Zbrent when I played against him)