The 50 seaters now have a hard limit. Delta would keep them until the contracts started to run out in 2018.
The overall block hours of DCI flying has been massively reduced. I don't care how big the aircraft is (50 or 76), there are still only 2 seats up front. This meant an increase in block hours for mainline, and a decrease in DCI, that's improvement.
The previous language was far too lax. There's no way that mainline guys were going to be able to eliminate RJs in one contract. They will take another swipe in 3 years.
I don't know why you guys can't see that this TA is a great thing for those of us trying to leave the regionals.