I was never a fan of CSZ because it was a horrible story change for the sake of it, just for shock and no consequences (as we can see, fortunately Kuai Liang is more or less on the same path than during the original timeline) you can even say it had more effect over Smoke with the enenra stuff. He also was killed by a single regular palm to the metal face after being able to one shot Kano and 1 vs 2 Goro and Kintaro.
The other thing that irks me a bit is that I'm theorizing Triborg has access to the designs of all robots (and that's why he can be cyber smoke even if he wasn't captured) but I always thought that for Smoke and Sub-Zero, they needed them to power the specific powers of smoke and ice with their natural abilities unlike Sektor and Cyrax that use common weaponry so... why did they even need Kuai Liang and Thomas if they could replicate their powers from the beginning without putting their bodies in the machine?
Going offtopic but that's why from a lore standpoint I would've prefered to see a Sektor variation, a Cyrax one and then a minion based Tekunin variation summoning more robots ala Ultron shared consciousnes.
Now on topic, the drones will probably power up multiple moves, not only adding DoT to the iceball, and it will be really easy to setup twice per combo (during the freeze and after a knock down to have it ready for the next combo), so depending on the added effects it can be really powerful.
I only hope his slide is more like Reptile's and doesn't evade as many Mids as Subbies slide, otherwise in combination with the dive kick it would be overkill and real Sub won't have much to offer against him.
Oh, and if he gets NJP sword, Cryo needs it as the weapon based Sub-Zero!