It is a balance issue, those "useless now" BP used to be very useful, back when level cap was 75 and when you do normal 6 people party - where you don't always get your optimal job combination. A lot of the SMN buffs were somewhat useful back then. Now that the game has changed drastically, I don't think they get to SMN yet when it come to adjusting the job. I think DRG and PUP are the 2 jobs that got the most drastic overhaul in a good way. Scholar got the best new 2 hours, and other jobs got mild adjustment that are semi useful.