Is it getting harder for tanks?

[MoroMurasaki]

It's not Third eye that does the enmity reduction.
It's merciful eyes, the heal.


And, technically, using merciful eyes is a reduction in damage, as Seigan is more potency per kenki than Shinten.

I admit my understanding of MNK is limited but I am pretty sure Forbidden Chakra is more important than Seigan/Shiten optimization on SAM by like a huge amount. Like they aren't even in the same ballpark.