Anyone think materia is getting reworked in 6.0?

[Vyrerus]

Pretty much. In a meta where boss damage is almost entirely tank-buster focused, where damage triumphs over all and damage provides just as much eHP benefits as TEN does due to damage affecting lifesteals, miniscule, constant damage mitigation has little place.
For TEN to be useful, they'd have to drastically change the mitigation scaling on TEN (where currently a half set gives 5%, make it give like 15%), along with upping enemy damage to make it a very strong choice, if autos were hitting you for 1/3rd your HP with base TEN

The easiest way they could make Tenacity mandatory is if they had breakpoints set for each fight with dramatic swings in damage. Base stats at 80 are like 380 I think, so say you have 380 TEN, boss autos deal 50% of your HP. Hit the breakpoint for the fight, say 2950, boss autos now deal 15% of your HP. People would hate it, but that would be the easiest way, I think.

[RyuDragnier]

The easiest way they could make Tenacity mandatory is if they had breakpoints set for each fight with dramatic swings in damage. Base stats at 80 are like 380 I think, so say you have 380 TEN, boss autos deal 50% of your HP. Hit the breakpoint for the fight, say 2950, boss autos now deal 15% of your HP. People would hate it, but that would be the easiest way, I think.

So basically like the old accuracy tiers from ARR and HW? That could work, but yeah, people won't like it. People HATED the old accuracy tiers system (with good reason).

[Packetdancer]

Base stats at 80 are like 380 I think

Depends on the stat, I think. I have 0 piety on my gear as a WHM and my piety is 340. I also (unsurprisingly) have zero tenacity on that gearset, and yet my tenacity is 380.

¯\_(ツ)_/¯