I honestly don't want Hayate to get his 3K SDS back. After a couple of days, 3pp, 3k got pretty annoying for it's damage output and there's nothing more that I hate in a fighting game than powerful brain dead juggles.
Well with only 8p guaranteed it's not as bad since 8p is his weakest launcher aside from threshold break launchers like 3p and 4p. A guaranteed CB is ludacris though, because not only does he get a CB to get damage that pushes over the threshold, but then he gets his highest damage launcher into his highest damage combo (but you know this already).
Even with 3pp, 3k (which is the least guesses other than his ceiling throw to 214p, 3k, launch, which doesn't work at the wall mind you), it's still two guesses overall.
I can deal with it being gone though. 214P just needs help, in my opinion. Instead of KDing in stun, why not just make it launch all the time in stun? That way you don't get screwed over for using 214p when you want the SD stun. It's 32 frames anyway so it's no different than mixing up with Mila's 7K into a guaranteed CB except he'll only get a launch despite his animation being a lot more obvious, and her having the ability to quickly stun or charge for the SD/GB.
Anyway, more importantly, I'm loading up my last list. This list is highly influenced by want of character development rather than lost of moves and items. The only thing I might budge on is numbers for his guard breaks, but other than that, after playing damn near all the cast (excluding Alpha), I think these buffs and return of moves that shouldn't have been taken will bring him back to a higher level and also make him slightly more unique an fun.
http://takedazxdoa.blogspot.com/2013/05/doa-entry-tldr-hayate-changes.html