I want DNC to be a healer but a melee healer or at least a gimmick that pushes them into going into the frontlines like how RDM has it's moment jumping into the frontlines. I also want DNC to be the opposite of AST in terms of utility as in instead of buffing the party they debuff the enemy.

As for the players saying that DNC has traditionally a support role I see no reason why that should prevent it from being a healer. I mean in XI it had heals and though I couldn't be the main healer it still had the option to heal so all they would be doing this time is focusing more on heals rather then support. Plus if XIV has shown us anything a job doesn't need to follow past iteration that closely or at all. Look at DRK in past games it has always a DPS not a tank, SCH in XI was kinda like RDM where it could do both white and black magic but now it's just a healer with a fairy that it never had before.