The Class is pretty much a giant gimmick of crits, easily applied movement stalling, baindaid unlocks and "free" damage from vaguely looking at someone. That's literally a plethora of unenjoyable mechanics, and it's all combined into one class. I'd honestly just start over with the class entirely. Pretty much remove everything it currently has and turn it into a proper flanking/combo class that doesn't heavily rely on unlocks to be relevant.
Address those band-aid "gimmicks", and keep the mechanics of the current sickburn airblast (remove the charging requirement. Seems unnecessary).