Lets see, an EtD candidate needs to be a Captain for 2 years and the current upgrade at Endeavor is what? Six to Eight? Isn't their plan also to go from the 160 planes they have now to something like 90? That should really help upgrade times. Also, the folks who don't pass their SSP interview are going to hang out in their Captain seats and reduce the amount of seats available for First Officers to move into.
So MAYBE a 6 year upgrade and then 2 as a captain for maybe 8 years to get to Big D. When you could go to someplace like Mesa, Compass, and PSA etc, with equally poor or slightly better pay, but a quicker upgrade and apply and get interviewed well before 8 years.
Maybe in a decade this will be a good program.