If best way is the only...why do we see different setups ?

[Reynhart]

Problem is, once groups find themselves hitting a wall, they start looking for every advantage they can get to clear that hurdle. Sometimes you have to do something you don't necessarily like for the sake of your group, and that's just the way it is

In my group, we stick to the main job people want to play, except when it doesn't offer a viable setup (Sorry, 7 BRD is not a viable setup ). The most we do is having a second role available to compensate for a missing person.
We're far...excuse me...we're faaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaar from being competitive raidwise, but we don't care.