I love how we always go off topic, but anyway, there is no way true balance is going to be achieved. Let's face it, in the current savage, you can even stack the same dps/tanks/healers and you can still clear it ggez.
People just don't feel the balance issue until you get into the min maxing as a group, i.e. speedrun. A9s currently has smn as the premier pick for huge aoe over anything else, else it's full standard drg/nin/brd/mch for 10-12. Now, why are mnk, pld and whm rarely brought into the extreme min maxing scenario? Simple, they are the lesser versions of their counterparts, easy as that. Heck, you can even put in BLM into that list and to some extent SMN. In the lower spectrum, every job has the ability to clear raid contents BUT when perfection is demanded, you get the lopsided data that you can see from fflogs and that's where the balance issues start popping up more rapidly. The exaggeration of the inferior jobs is a lot more of a stigma, however is very much valid in the top level which majority of players tend to avoid doing anyway. And DPS preference is pretty much in line with what SE has been doing up till now so I don't really see a place of huge changes in philosophy if any.
Ultimately this is just a game, play what you like and less complaining. Unless if you are doing serious speedruns or world racing, I don't see any reason why these kind of posts keep popping up. UH WAR SO BROKEN DUDE, SCH SHIELD SO GOOD OMG, BALANCE CARD MORE LIKE IMBALANCE. Go figure. Most raiders don't even do speedruns to even know their limit too, the complaints so far are on the surface at best, imo unwarranted. It's like people saying DRK is way better in a12s (which ofc is true) but still PLD can clear just fine, just need to change strat. I remember seeing week1-2 progression with PLD was just a pain in the ass, nowadays you pretty much can face tank all the things as PLD. But hey, PLD is fine for the most part.