on ground if you hitconfirm off 5B always go for 6A > TL/taunt combo if the opponent is standing
if you 5C at max distance follow with 2C > drive , if you caught the opponent in CH you can even ~B cancel the drive into TL, or RC and go 3C > combo. Else just ~A/~C cancel to keep up the pressure.
if you hitconfirm a 3C near the corner you can go for TL > okizeme ender/AB2 ender if you have meter
off air to air j.C close to the ground you can follow up with a 6C, else just follow with 5D~6 > j.C > [wait] > your string of choice (also depending on character)
off antiair 2D again it depends on your positioning. If the enemy is right above you and close to the ground you can ~A cancel and follow with 6C, else follow with 5D~6 combo. Or you can do what Tsujikawa does and just and go for 3D~3 > cat2 loop asap by keeping the air string as short as possible while staying as closer to the ground as possible. Though it doesn't grant real okizeme/pressure you'll be on the opponent's face and as their teching near the ground.
Same thing for hitconfirmed antiair 6A: the damage is not really that great so it's better to setup your offense after that than trying to maximize poor damage (unless going for the killing blow) and go for cat2 loop as soon as you're in the air. You can also mess up with the opponent with j.aa > grab / j.a grab whatever (this is an other thing that Tsujikawa often does to fetch for throw counters).
If you land a j.A with both you and opponent close to the ground (with Tao being slightly above) you can 6A right after or even 5AA > 6A as you land, after that you can j.A again/airthrow/combo depending on what the opponent is doing. You basically take advantage of the little stun that j.A gives to make the opponent guess on what to do as he's landing (barrier? try to tech a possible airthrow or making them scared to do that in case of throw reject setups).
Generally speaking if you hitconfirm off not-so-great normals it's always good to try to setup better ones right after. 2B > throw, 6B > (link) 5B, etc. But again, it's really variable depending also on what the matchups is.