Ok...some of those changes are out right broken, just the RoW one, will make nin borderline useless, damage debuff, vul debuff plus SKs /SPs buff? Broken AF
Not only that but lets take the fire EF. How do you think that wil work out on fights like O3s? the boss jumping around, will make that lingering AOE an outright dps loss. How about o2s?
Stance dancing doesnt work, let alone how you are proposing it. Not only that but it will make the class have a lot less "flow", prone to mistakes, and extremely situational.
It will be an outright DPS loss in every aspect, and i do believe that these "changes" are absurd, mostly, some of them actually are pretty interesting.
This will make mnk a support-ish dps and personally i would hate to see that, it would go against what the class has been and is. Also its basically an overhaul, that is a bad thing.

Overall, they are not great sugestions, well most of them are not.