No DA game has gone with the trinity design. The roles are as basic and generalized as it gets in an fantasy setting rpg.
Point being is that Both DAO and DA2 had the typical setup to where you can play with a Healer, Tank, and 2 DPS. The DPS could be a Mage, Warrior, or Rogue.
I understand that they wanted combat to be more challenging with no healing and no regenerative health, but simply taking out healing from mages was a bit extreme. I hope there are story reasons as to why the Inquisitor/Sola/Dorian/Vivi does not heal or choose to heal even as mages. Especially when in terms of lore, it appears that most mages have some sort of healing ability, even at the most basic level.
Again, nice explaination by Mr. Weekes but I am still not buying it and I am hoping that with DA4 healing is brought back.
If they thought that we spammed heal, then why not do what they did with health potions? I sure did spam a lot of potions in DA2 and especially in DA2, but did they take away that? No, instead they nerfed it by allowing you to only carry a certain amount of potions instead of like 50+ like I did in DAO. Why couldn't they just nerf healing as well? Make it consume more mana, make the reload times longer, and/or lessen the affects that healing does. Either way, we still get our challenging combat and still can use heals.