Interaction of Ability Accuracy with Nodes is Fundamentally Flawed
I think my point is best explained with examples:
1) Ability Accuracy reduction from champions like Domino, Archangel, Magneto and from Concussion interact with Matador in a very weird way. They fail the part of the node that reads "the attacker gains 1 bar of power every time the defender activates a special attack". They don't fail the part of the node that reads "this is the only way the Attacker can gain power in this fight". So if you have 100% AA reduction you are power locked. This is especially funny in the Act 7 Rhino boss fight where concussion is a viable way to get around Tantrum, but there's also Matador and Power Shield.
2) Ability Accuracy reduction, namely Quake, can bypass Window of Opportunity but not Stunning Reflection.
3) Ability Accuracy reduction can fail Got A Light (you have a chance to incinerate the opponent with your attacks). This happened to me when my Aegon reached a high enough combo in the Act 7 path, which was annoying because the path also has Pleasure to Burn.
These examples highlight two fundamental problems. Firstly, reducing the ability accuracy of the defender can shut down nodes that help the attacker. In some cases it will shut down part of a node that helps you and not shut down the other part that is annoying for you. I find it very hard to believe that this is intentional because it makes no sense. I think it's more likely that Kabam doesn't fully understand how their own code works. Bottom line is, ability accuracy reduction should not shut down nodes or parts of nodes that help you.
Secondly, there needs to be more transparency around which nodes are affected by ability accuracy and which ones aren't, perhaps by including that in node descriptions. In any case, it shouldn't be a system of trial and error to figure out if it will work or not. I would be interested to hear what others think about this, and I hope kabam will figure out ability accuracy and nodes because it doesn't seem like they have.