As far as I am concerned, the changes are good. Hell yeah keep cheap occasional flyers out of F, if it means giving us elites a better chance to upgrade. that's exactly the spin on it that they did, and hopefully they mean it. They specifically mention that they are making changes to have as little negative effect on elites as possible.

I once flew in first on a $220 Q fare BOS-SFO, I'm sure the fuel was more expensive than that, and it doesn't make sense for them unless you're the kinda person who will buy those tickets consitently, all the time on that airline.