For anyone considering joining Delta, no I wouldn't consider it a viable wide body career path. The 757 will be phased out in the next 10 years, replaced by 321 & 737-900. 767 flying will be replace with A330. I'd guess that most senior FO's on the 7ER will switch to the 330 forcing it to be a super senior aircraft. I've flown with too many right seat lifer's. I wouldn't recommend a new hire get on a fleet that's downsizing. They'll be stuck on the bottom as the senior pilots claw onto the plane their most comfortable with. Especially if they're switching from Boeing to Airbus. The senior pilots will have displacement rights if they wait to the bitter end of the fleet.

In the last two years the 7ER fleet was slammed with new hire training. I don't see a cycle like that ever happening again for that fleet.