Well while everything is viable, let’s not lie here. Samurai with the best possible comp isn’t replacing Nin. Trick attack is far too powerful and an Equally skilled Nin is better than a Sam.

Samurai has the benefit of having really high damage allowing it to plow through progression for groups who aren’t he best at optimizing cooldowns while learning a fight. The main problem aside form it’s offensive utility is that it also has NO defensive utility, or at least none that the other melee don’t also have. I’ll be honest, it’s playable but far from a “good” spot. People will meme you, you’ll get locked out of pf, and you’ll have a harder time getting into statics. But it’s still playable