No, Shinryu was never changed. The biggest difficulty with Shinryu was lack of access to the gear that was locked behind it. Once people started getting that, there were less wipes and less vote abandons. And next expansion they started giving us gear in the MSQ before the final trial.
To the OP, no thanks. MSQ is a decent difficulty. It's spicy but doable. Expert is a step up from that and Extremes a step from that. We don't now how Savage is yet but we can see where that is when it comes out.
Like Kaurz says, outside of Savage or maybe Extreme, nobody wants to spend an entire lockout wiping to something. And even hardcore players need some content we can let our hair down in and chill from the high-performance mode we need in the endgame content. Especially since it's going to be challenging enough for differing levels of playstyle.