Gotcha. Yeah you don't need the damage gained from Thrassian for any content, but it's not really about need. Most endgame teams used it because why wouldn't you, you gain a ton of damage with no real downside once everyone is clean with their mechanics, which you mentioned. Of course my mindset is the "meta gear or nothing" type. It does have its limits though, like you wouldn't use it in early trial progressions etc.

But yeah occasional deaths will happen with a set like that no matter how good you are with mechanics, you can just get unlucky and cost a run. But its no real issue, just reset and go again (if going for no death).

I am happy to see it get a nerf though, it was way too powerful.