I don't know what can honestly be done for Final Fantasy XIV at this point.

[SieyaM]

Skill trees or custom builds come up every now and again and every time it has to be said that no matter what the only build that will be acceptable is the optimal one. Doesn't matter if all of them can clear content or even perform well in the most difficult content, the community will insist on everyone following the optimal build at all times or they will be removed from parties. Even with the slight difference in performance we have with the jobs now there are some that are excluded from PF simply because they don't perform as well as others, not because they cannot clear.

[Jeeqbit]

Skill trees or custom builds come up every now and again and every time it has to be said that no matter what the only build that will be acceptable is the optimal one.

I think that Blue Mage did this right. You can actually use different abilities depending on your party or strategy. For example, you could try to use the Avail (Cover) strat, or just do mechanics. You can use Bad Breath to apply a damage down to the boss, or risk it and try to invest in a primal ability instead. You can use a Basic Instinct strat where you get the MT to final sting last while using Basic Instinct. You can all pick up White Wind to help, or invest in DPS skills. There are a whole lot of interesting things you can do that stray from a meta depending on the capabilities, interests and skill of your own party members and it's great.