Predictions for job(s) in the next expansion?

[Seraphor]

The 5.0 patch notes list the roles though. It’s not about us splitting them, the patch notes themselves have the classes and 5 roles listed as Tank/Healer/Melee/Caster/Physical Ranged.

And yet we have 4 person parties instead of 5.
AST has melee/ranged cards.
Extreme and savage tier fights balanced around having 2 melee and 2 ranged.
I'm saying it's not clear cut.