My Problem with this isn't about harder content.
My Issue is the idea of making FFXIV into WoW.

Yes create some more challenging content including more creative and challenging dungeons; maybe as optional side stuff, or endgame content not tied to the MSQ, or maybe have a small handful of Hard MSQ dungeons.
All of that and a bag a chips, sounds like a GREAT time.
But no, get out of here with the idea of FFXIV needs to be like WoW. All those dumb systems can take a hike