Ok, there's always been and will always be this issue whenever new jobs arrive, as with the thread about SAM tank/DPS - the community will be divided, and however it turns out, half the community will be annoyed SAM became DPS, cause they wanted is as tank, or the other way.
Why is the class system so restricting? why can't we be allowed to just pick our favorite job, and play it with our preferred role?
Let's take GLD/PLD for example, if we had skill trees, we could stuff all the defensive buffs into defense tree, and if you want to be full DPS, you just go with DPS tree - you won't have any of those defensive buffs - this will solve the whole dilemma of PLD being way to OP, if it could be a strong DPS, while also using defensive buffs - which is why it's basically impossible to add a new DPS job to GLD; why not just fix that with skill trees?
Put shield use in def tree, and 2h stance in offense tree, so GLD uses their big 1h sword, with 2hands, like bastard sword. Maybe split offense tree into 2h path and dual wield path; The holy avenger, that smites their enemies with divine fury.
PGL has fist of earth, feather foot, mantra, second wind - can cross class keen flurry - why not give them a defensive tree? make arm of the destroyer, their aoe aggro skill. haymaker would be more useful as a tank, too.
Give them a new aggro combo with positional burst damage, so when boss randomly turns around, you can smash their back for bonus damage/aggro (situational fell cleave)
Split offensive tree into fist of wind and fire. put GL in FoW path for SS build, and FoF for a more heavy/slow hitter.
You could even give them a fist of life tree, and make them a healer - adding mantra stance, shorten second wind CD, make it AOE.
Stack chakra for higher heal - make purification into a "benediction" (loose chakra stack)
There's lots of things that could be done to add more fun play-styles, for your preferred job; not having to cap and gear up multiple jobs.