The presence of tank mastery alone basically ruins coils even on mine specifically because the tanks just don’t take anywhere near as much damage as they used to and don’t need anywhere near as much upkeep which frees the healers up to do way more than they did when content was current

It is also just way easier to cheese mechanics with the buffed potency than it used to be. It’s so easy to cheese allagen field these days with shields because you have more free mana to spam shields and the shield potency is higher. I remember in ShB I did a coils run of T7 and we were killing her so fast she desynced then we pushed her phases so fast she somehow managed to resync and we cleared her as normal. That 100% would have been a wipe when current