Yes, consolidation has been GREAT for passengers. Less flights / choices. Higher prices. Award programs tightening up.
There are sustainable operations now. Happier employees equal happier passengers. Profits = safety (IMO).
As to gamers, as you call them, they work with the system that was given to them. There's no way to game a system, when DL has created the rules! We work with whatever rules we are given. When DL feels they have created a loophole that allows so-called "gaming", they have every right to close it, and they have in the past.