Personally, they feel the same except directly nerfed under lvl 82 and the loss of shadowfang just made me click raiju multiple times as an option.
Raiju's existence may have probably be just shadowfang with instant damage, at 90.
It'd be nice if you could still use weaponskills as I think it's pretty pointless to have it be removed upon execution. Sure, niche uses, but a situation may still pop up as a nice to have if it didn't remove weaponskills. Such as P3S Add phase where you could just do this even though I could've just used fleeting instead as it's how gap closers work https://gfycat.com/recentoddballoonfish .
Reminder that shukuchi still exists and effectively a very free movement tool on it's own.
The 10 seconds of huton being gone is strange as I doubt it'll affect most content except under lvl 53 and TEA and at the same time, given back at lvl 82 through kamaitachi. It feels like an empty change.
There's Huraijin, it's sole purpose is to be huton without spending mudras, although, it feels awkward to use in the first place without huton as it retains the normal recast gcd. It's there for recovery under utility I guess. At the same time, it feels like another empty addition that would fit the niche 10 seconds of huton had, and armor crush exists.
The recent raiju change gave options instead of having to face a situation like https://gfycat.com/clutteredpersonallemming which was solved by https://gfycat.com/whoppingselfreliantgopher although not preferred along with kamaitachi being the bunshin button while not needing stacks of it.
While shadowfang is... a dot that we have and gave the amount of ninki armor crush/aeolian edge gives and existed till the removal of it in EW for under lvl 82.
The ninki increase of 5 well, it's there and there are more bhavacakras.
In terms of changes, it feels very similar to how DRG remained almost/exactly the same with an extra ogcd, another life surge and spineshatter dive and some trait upgrades.
Except NIN lost SF and 10 seconds of huton in exchange for huraijin, kamaitachi and raiju as GCD filler during TA.
DPS wise, well, I expect improvements from the Live letter.
I wonder how it'll be if SHB potencies for NIN's AE/AC were brought back and retained current changes. I'd think it'll likely still be slightly short of MNK/RPR.
...An off topic note I'd add would be RPR's debuff for their 10% buff should've been a buff on themselves instead of a debuff.
...It's not like adding a type of shadowfang but give it 5% dmg increase to the nin on a 60s cooldown besides TA is a good idea if we dislike dots, right?... I did dislike how it's cooldown was tied to GCD speed so it'll be really bad if you used it without huton for w/e reason.