The interesting boiling point

[Antwan]

It is also nice to know what all classes and jobs are capable of because you can immediately figure out which of the moves of your current class/job can catalyze with the move your party member used, thereby increasing damage, healing efficiency, etc. but once again that info is a plus, and isn't a necessity. (I try to know as much as possible and learn things as I go along)

It's not necessary, but it'll help you get the job done more efficiently.

[Wintersandman]

Snip

Maybe they don't have to play the role but they should at least ask what it is like. I am a tank and I have a monk in the party. Why does that monk care if I continuously spin the mob or not. Ranged and heals don't care. But that monk would prefer if I keep that mob as still as possible.

Or the ask the healer why they get so upset when I run off without buffs. Because you know.... it makes everyone breathe a tad bit easier if I have stoneskin when I am speed running or doing a large pull. Why? because 2 seconds can make a difference.