I have found that you can be immobilized when using whirlwind. It appears to hit right after the trait “Mobile strikes” checks and cleanses the current immobilize and the evasion mechanic for whirlwind kicks in.
My proposal is to for example make “Mobile Strikes” :
“Movement skills break immobilize and you are immune to immobilize for the duration of the movement skill.”
Honestly what is the point of Mobile strikes if you can be immobilized before whirlwind, mid eviscerate, right after you cast rush, mid earthshaker, etc.
K Pop
The Warrior, The Necro, The F1 Connoisseur
http://www.twitch.tv/interpretinterrupt