055166K:
Scenario: big delay on intended route/destination........possibly draconian level cap as well......file a different route to different destination and divert en route!!!! I'm sure that has never happened...but if it ever did and then happened again and seemed to become a normal operating practice.....one might become suspicious.
I've actually come across this once quite recently when there was a lot of fog around the London area. Nothing was landing at the smaller fields and diversions to the rest were starting to be refused, so one filed to the Big Field, asked for the weather for the smaller one and if anything had landed. The weather had slightly improved and a couple of jets had landed, so diversion request made with the reason "that's where we really want to go"! At least they were honest.