@aranhere0002: I've done the math, using the JMS delay numbers. Not gonna bother linking the thread right now, but trust me on this.
Shinsoku and Rai Blade Flash are nigh-identical in base DPS when you have the +1 hits hyper for Shinsoku (around 5000%/sec at normal-6 speed). At the hard speed cap, Blade Flash is about 20% higher in DPS but suffers from locking you in place, higher damage per hit (lower hit count per second overall, relevant if you're cap-funded) and slower healing from Warrior's Heart (~3 casts per second versus ~6). I don't recommend using Blade Flash in any situation where you need to move quickly (e.g. Gollux) since Hayatos can't telecast their dash in Battoujutsu stance.
I would like to note (and I can't believe this doesn't occur to anybody) that the 4 hits aspect of Rai Blade Flash is 100% intended. It is so in JMS, and the 5 hits statement on the tooltip and patch notes is a typo. The skill descriptions in the patch notes, of course, were copy-pasted from the tooltips.
Ugh, not this again. It's the same thing all over again. You spread misinformation, I ask you for proof (or you end up proven wrong entirely), you say nothing, then you continue to bump old threads spreading your usual misinformation. What's more interesting is you were proven wrong even before you posted here, yet you decided to bump this thread anyway. Lately I've been wishing for more Hayato discussion, but I feel like the genie turned out to be a jackass and gave me you instead.
Shinsoku is weaker than Rai Blade Flash, but not by half. Do you have any maths or battle analysis logs to back up your claims? Probably not. I don't think you're in any position to state what's good and what's not for this class, especially when you say stuff like this: i.imgur.com/hLyTdXf.png
What I want to know is, why do you keep posting on a subject you clearly have no knowledge in?