The problem I feel is theres no real sacrifice or decision in choosing to have spells. You can only have so much TP so having the DoW abilities line your bar is worthless because you will never use that many, and most of them do similar things. Meaning everyone pretty much goes with the most effective and useful casting spells. Punishing Barbs, Sacrifice, Cure, Shock Spikes etc. Making a THM in smaller PTs where you don't need AoE cures to get a ton of people that much less useful, since the debuffs are for the most part underpowered and dumb.
The fact that most DoW jobs get their own cure techniques makes it not that big of deal to have to search for one of the DoM to complete a PT.