Simply put:
Do you believe FFXIV should keep the Trinity System?
Or
Should it adopt the model where every class is self-sufficient?
I'm somewhere in the middle. I'm pro-trinity, but I think they all need to be self-sufficient as well. Forcing people to play together is a bad thing. The way things are now is good, but a system I'd like even more would be the ability to have NPC assistants/mercenaries of various roles by your side at all times, and not just 1 chocobo (this is based on my lvl 5 chocobo that can't do jack s*** at ANY role, though). That way, all 3 roles can be totally focused on their role, and not be forced to hybridize just to be able to solo stuff.