@Antvasima
Sure, here is how tiering gonna get change:
Korosensei: One of his weakness are the lack of brute strength which mean he can restrained by weaker people (his students who is 9-B), so his rating is
Unknown. However, Korosensei main strength is speed and he could all those thing mentioned above (creating tornados and KE calc) so he will be given
High 8-C via moving at maximum speed. Korosensei third key (Tentacle Monster) would straight up be High 8-C because he no longer has previous weakness.
Reaper: He is said to be 2x times stronger than Korosensei so he will be
High 8-C.
Kaede Kayano: She get downgrade to
9-A via
being stronger than Itona who can destroy tank and fighter jet.
Here is how Lifting Strength gonna get change:
Almost everybody get downgrade to
Superhuman because there isn't an exact value we can get.
Itona get upgrade to
Class 50 via lifting a semi-trailer track and Kaede scales to him, possibly
higher as the scan on his profile suggest he might able to lift a jet or tank but there is no way to tell. Korosensei third key and Reaper scales to him as well.