I'm sorry you feel that way.
ATA Holdings bought the DC10's. ATA Airlines was supposed to get 7-9 to operate. ATA Holdings changed it's name, created a Delaware company, and bought WLDA. GAL gave 3-4 of ATA Airlines' DC10s to World Airlines. World did not buy them. If effect, ATA Airlines saved World's jobs, since you were forced to give up MD-11's.
I'm sorry you think that flying an airplane, once you've got the doors closed, is different. As a pilot, you fly every airplane the same way. You don't fly it a charter way one day and then scheduled the next. We are responsible for flying airplanes, nothing else. So even if they're "apples and oranges" they're still fruit. If DAL had not scoped out RJ's, AMR most likely would not have or created a flow-back, nor would CAL, etc. But, then again, pilots eat their own for personal gain, and unions make it tasty.
I'm not gonna defend ATA's mangement. So I'll give you that one. But the success you seem to think World was having was not shared by all. No airline of the three has the right to claim the GAL cash cow.
The pay scale you're so proud of was negotiated out of bankruptcy. You had to threaten strike to get it. All of the CA's at ATA are 12+ years. ATA's present contract was coerced under bankruptcy threats. It reflects an 18% paycut off of 2003 wages. We have recouped some of that pay. ATA's DC10 pay is greater than World's, and I've been told by some that have worked for both, ATA's concessionary contract is better than World's. I'm a 10th year FO now on the B737. I'm 97 numbers off of the bottom of the active list of 587 (902 total). If there was no bankruptcy I'd be making just under $184/hr as B73 CA. I probably could have held B757 CA by now as well. Our 401k has remained the same, but our CMPP (b-fund) should be 7.5%, it's now 2.5%.
I'm tired of sacrificing my career for the benefit of others. There are many CA's at ATA that have upgraded since bankruptcy that were never captains before at any carrier. World and NAA are hiring. They're not hiring exclusively from our furlough list, but some are going there. We are each flying the others' business.
If you're happy at World, then fine. Good for you. I will not vote for a contract, which will probably come before you get yours updated, that does not protect my career vis-a-vis inadequate scope.
Good luck.