It's so terrible. I have never once in my life cared what SAM's DPS was relative to other jobs. It had the best rotation in the game out of the box at level 50 when it first came out, I loved it right away. At level 70 the rest of the rotation was the garnish on an exquisite pasta dish. In ShB and EW they just further refined the existing kit by giving us more of what we already had, adding a charge to Meikyo Shisui and giving us the Kaeshi Iaijutsu recast button. The only part of the initial EW changes I disliked was the removal of Seigan, because it made the use of Third Eye feel engaging and rewarding. I think they could have just deleted Merciful Eyes and made Seigan an extension of Third Eye, either automatically reflecting damage onto the target that struck Third Eye's shield, or transforming Third Eye into Seigan upon triggering its effect.

I do think we have a few too many buttons now, but this could be resolved by folding some buttons into others, and combining the effects of abilities like Guren/Senei and Shoha/Shoha II.

SAM has gone from an exquisite pasta dish to a meal replacement bar. Sure, it fills the hole in your stomach and is fairly nutritious, and it may even taste pretty good. But there's not much there you can really enjoy or look forward to about eating it again.