It may be old news but parking of aircraft is reality. They don't want to pay for major maintenance on aircraft, that's how low cash is. Just remember, they may be able to change their model again and again but the fact remains that they will continue to lose money when the combination of low yeilds and high oil prices is around. Make no mistake, their only plan is the one that attempts to lose the least amount of money, ie strictly defensive. It's been 2 years and 2 months and they have yet to come out with something. The announcement will come and it will NOT be beneficial to mainline (I'm not a doom and gloomer but it's just a sad reality.)
In the meantime, guess who is going to maintain market share at their hubs? (hint: not mainline) If you were a betting man or woman, what would you put your money down on? For example, if mainline United pilots were able to 'bid' on their own flying against the RJ providers, do you think they'd have a chance? The contract says unlimited 70 seaters, right?
Heaven forbid that mainline wants some of that flying back....boy, that will be just like stealing, right?