Not only is the Support role very much alive and well, its arguably much more important than before. Buffing, debuffing and cc are going to be a major componant of battles. Don't forget the fundamental change here is not "get rid of healing" - healing still exists in the game, its prevent damage before it is received rather than heal damage afterwards.
I'm very much looking forward to being a Support powerhouse on my Mage playthrough.
"Healing still exists in the game" but any sword swinging mook can drop a 'revive bomb' or quaff an (extremely limited number of) healing potions. Mages, once a unique, versatile and dynamic class, are now the same as any warrior off the street. Worse, they now seem hogtied to a small number of skills dedicated to not dying (buff/debuff/cc). Tanks and Rogues typically had the same type of skill sets, limiting damage vs regenerative capacity. Focus heal is what...once every 2 minutes? How many combats have you seen last that long? Especially when you don't have any natural regenerative capacity at all. I am imagining fights being like the DA2 Arishok battle, forever running around in circles, screaming like a little girl and taking pot shots at their knees, quaffing potions trying not to die.
I don't mind the only 8 skills active (I typically only used a few favorites each fight in previous games with a lot of passive abilities), so I don't really mind that part of the game, but I will truly miss the uniqueness of playing a character the way i wanted to play them.
I get that people are into the combat/tactical part of the game. I'm not, I find it boring. I like the story, it's why I play on Easy/Casual mode, so I can relax, have fun and enjoy the tale. If they wanted to make it harder, why didn't they just make nightmare truly nightmarish and take away the healing? Now it seems like no matter what setting it's on, it's going to be all 'nightmare mode' for me.
But I guess I'm glad to see they made someone happy with rendering mages as mundane as every other shmoe in Thedas.