BLU flaw was mostly MP managment.
When you get enough refresh with atmas (up to 20 MP/tic from atma only) then you don't have much to worry about MP and added with the new spells, you're doing very good in the DD department.
SAM and DRK can still be ok, but BLU has teh advantage of being able to do all the basic lights alone.
PLD is obsolete, with the HP and MP you get, throw a WHM and a MNK/THF/NIN and you'll have a good tank/DD which can hold on most NMs (WHM cures are just huge).
PLD survival tools are no longuer needed, and lack DD skills to make up for they aformentioned jobs tanking.
COR, I haven't seen many, so I don't know, they can still be of use I guess, but maybe not as much as before.
SMN can do very good.
Put some damage taken- atma on (pets get atmas effect you put on yourself) and you'll have good pets holding some NMs.
Very useful on dangerous NMs (Death, Doom, En-Death, En-Doom, Break, etc...), if you pet dies you can always get a new one working just as much as before while a player will be weakened.
"One day, I had a dream ! ... and then I woke up."