So here is my breakdown and how I understand how the character works but I believe these are the reasons this change is not needed, or warranted.
Neurotoxin - Is a passive effect, thus the stun induced from a passive effect should be passive as well, and thus the only thing that can bypass a limber or any other stun reduction or immunity mastery. (Why? Because it makes the character completely and totally unique!) Here are some other reasons I've thought about.
To apply Neurotoxin you have to crit hit 1-4+ times to EVEN get the chance to apply a poison
Once bleed is applied, you then can ONLY apply poisons through blocked attacks, (means you still take some damage, regardless)
Then after you have a poison stack, now you have to repeat step one again to gain a SINGLE neurotoxin
So lets say you have perfect odds, Heavy (4 Bleeds), Block (One poison and you took some block damage), Heavy/Medium/Light (1 Neurotoxin application)
Now keep in mind this is perfect chances, crits all 4 hits, then another after block. Now wait, there's even more of a wait...
To get the neurotoxin stun, you then have to wait for Neurotoxin to EXPIRE!
That is a pretty hefty compound of actions to get a single application of Neurotoxin for a 1.5 second stun! In 1.5 seconds you MAYBE have a chance to get a single combo before the stun ends.
Now lets compare that to Iceman's passive damage (needs duped so using my encounters with 4* Iceman for this)
1st off, ONLY TWO characters can nullify this damage. (Sabertooth/Mephisto) Yes, you can cold snap the iceman too.... (we won't get into that, that's an entirely different discussion for a different time, probably entailing a lot of swearing)
Now the damage I have taken BOTH in quests, and Alliance war has been between 30-60% of my entire hp pool. SOMETIMES OVER HALF! Unless I have a regener/willpower/salve, etc, I'm probably dead if I took those off. (BTW pro tip, AA can't do SQUAT to Iceman with Neurotoxin) OH, and Coldsnap stops all auto evades. To add to this, there is Mephisto's Incinerate Aura that can only be countered by 3 champions, Vulture (Has to be duped), Iceman, Quake (bypasses it by passive damage) Yes he can burn himself.
So this brings me to:
Question 1 - How is 1.5 second PASSIVE stun anywhere comparable to 30-50% unblockable damage on all but TWO champions in the entire contest?
Question 2 - How is this in anyway considered anything other than a UNIQUE ability?
Here's why, here is a list of all the characters that CAN'T be neurotoxin'd - Ultron, Ultron OG, Vision, Vision OG, Nebula, Iceman, Medusa, Blackbolt, Kamala Khan, Captain Marvel, Ms. Marvel, Ronan, Joe Fix It, Hulk, Abomination, Hyperion, She Hulk, Dormammu, Mephisto, Ghost Rider, Morningstar, Unstoppable Colossus, Colossus, Groot, King Groot, Luke Cage
Hard to Neurotoxin - Old Man Logan, Gambit, Beast, Blade, Rogue, Red Hulk, Kingpin, Agent Venom, Crossbones, Iron Paitriot, Karnak, Cable (Degen per bleed)
That is 26 Champions that absolutely CANNOT be neurotoxin'd and another 11 which are hard, and lastly 1 that makes you pay in damage back for even doing it! A total of 38 champions that can cause problems to Archangel AS HE IS NOW!
If anything, leaving him as is will and does encourage a bit more diversity in alliance war defense. Kamala Khan, Gambit, Beast, Joe Fix It, Blackbolt, Colossus, Groots, and She Hulks? Why? Cause that's at least 8 more that absolutely can't be Neurotoxin stunned.
Question 3 - Why make this change when it will subsequently hurt your ongoing push for diversity in Alliance wars? Why push this when sentineloids are all immune? Why shoot yourself in the foot more?
Question 4 - This in my understanding clearly qualifies for a rank down ticket if you continue the change as there is clearly 37 choices to place on stun immune nodes in war WHILE giving an increase in diversity. Keeping the change just reinforces the fact that these are absolutely and totally useless champions that really just clutter the rosters, cause anger and contempt, and more over, collect dust on the rosters. With Archangel able to bypass the stun immune node over HALF of those champions now have a fairly important use!
So let me hear from you devs,
@Kabam Miike @Kabam Vydious @Kabam Zibiit