As much as I wish I could agree, I can't. Most of the players that I know either have no interest in leveling/gearing additional classes or already have all the classes leveled. I know I for one am missing WHM DRG MNK and FSH, and I honestly don't have any interest in them at all. I have Lucis+fully melded BTN MIN CUL and I'm not many steps away from the rest of the crafters. (I'm not trying to brag or sound like a jerk, I'm just trying to emphasize the validity of my point)
On top of this, unlocking poetics is seemingly useless, since those of us who have been capping weekly since they were released are already swimming in them, I have "full" poetic gear on 2 classes including 2 weapons, and that's to say nothing of soldiery where I have 3 stacks of 99 raziqsap rotting in my inventory and still accidentally cap on a regular basis. Unlocking Final Coil would be a smart move, but even that won't be enough to "tide over" many people, I fear. I know that I speak for a relatively small percentage of the population, but I am only missing a few pieces from a full final coil set on my main, and I know many others in my circles that are in the same boat. (once again I'm not trying to brag and sound like a jerk, I'm just explaining where I and many people I know are coming from)