Except even that is basically an auto-hit. Can I resist it, how do you disrupt my chakra just by looking at me enough to drop my barrier?
The technique is never actually used in a fight and it should stay that way.
Well, where is the line between autohit and not autohit in that case? A barrier that is erected suddenly that encompasses a wide area and negates certain chakras is less of an autohit than a standard genjutsu? A one hit seal that cannot be resisted is less autohit than a surprise long range kamui center body?
A barrier shatter technique requires a set amount of chakra for a static barrier, so I am of the mind that a person would have to exert chakra to counter it, should they be aware of the shatter attempt.
Or we could just not expand its abilities into things it's never been shown able to do.
Or we could just ban anything that you can neither resist nor dodge upon activation/application. Which would pretty much make SL a very boring place.
Or maybe ban anything that is not explicitly shown in the canon.
I am far from the choir on that one, I'm the opposition. xD
To have barriers that can be instantly erected that instantly affect an area of effect with a crippling effect is on the same level as a barrier shattering technique that instantly affects a jutsu that it is designed to break. It is one thing to say that the barrier shattering technique is impractical to use, it is another to outright ban it from practical combat usage. It is never explicitly stated that the barrier must be maintained by a seal or passive technique of some sort in order for the jutsu to work.
I am down with defining when this technique can be used and how, but the barrier shatter technique functionally causes a disruption in chakra that forces the barrier down, similar to how genjutsu disrupts the senses of an affected individual.