IAD more, doing the back jump delay airdash is what every person with a reliable AA wants.
should hit confirm your hell's fang more, going for the two hits every time leaves a large opening
I know it's a bad habit to get out of, but using carnage scissors as a wakeup reversal distortion is a terrible idea, try using blood kain or RC ID
I dunno if it's something you're used to but against crouching opponents always try to open up a space for 6C combos, if you don't know them, learn them, they're a really great way to get in crouching opponent damage.
don't always dash cancel 5D, mix it up with letting them block 5D(1)-death spike, it'll throw people off and if you're lucky land as a counter for a juicier combo
Back throw should always lead to GH-5B-etc. on everyone, it always lands more damage than jumping straight into an air loop
hope these helped