As I said, friendly tests are not meaningful for most people.
Inside Isolation and Inside Box and One wasn't introduced in friendlies no matter if we call them meaningfull or usefull or something else. That's the biggest problem. At least these 2 tactics couldn't be able to use in competitive matches this season.
Well, you can count how many matches you will lose by isolation putted against you. While there are not many managers which are using current tactics effectively, I dont see a point in introducing them later if developers are sure about them. If this would make a difference in B3 or a first league, perhaps these teams are supposed to wait for a new tactics little longer, because in high league it can make a difference.