I posted this elsewhere, but I figure I might as well drop it here too:

I don't think the twister mechanic itself is "tuned" in an interesting way, but the interaction with the dreadknights is decent, and I like the tuning in the last phase a lot.

If you want to count, twister dodge rate for the kill was:
Carraway: 1/1
Arin: 2/2
Verily: 2/4
Sniper: 3/3
Junpei: 3/3
Sirius: 3/4
Peng: 2/2
Lilaea: 1/1

Each individual in our kill group has, at one time or another, achieved 80-90% dodge rate over a night's worth of attempts (~4-6 hours), and sometimes over several days' or an entire week's worth of attempts.