Originally Posted by
Edge-
That's the biggest boon, for me. Now what calling you roll determines the "flavor" of how you perform a role, not what role you can perform. Allows for far more flexibility, though there are absolutely still callings that are highly valued for certain roles over others (-chon specs being more or less necessary, warriors being AoE healers while mages tend to focus more on tank healing etc.).
You were never really "special" before, either. There were always at least 2 callings for each role. All 4 could dps, 3 could tank, 2 could heal, and 2.5 could support (clerics could sorta fill in as support) right from launch. None were "special" in that sense.