Krav Maga is always evolving. When the dynamics of attacks change, so must the defenses. There are many ways to do things, some more valid then others wouldn’t you agree?
Here is the dilemma . . . sometimes a specific method or technique has been taught for so long, by so many, that it’s no longer questioned and is taken as law. It is assumed that it works because “They” say so. As instructors, we must constantly assess and add just to make sure that what we are teaching offers the most effective method to our students. But as students, It’s not wrong to question why you may do something “This way”, it’s not wrong to see how others do things. The most effective method is the one than works . . . period.
No one system answers every potential threat, has the answers to every scenario. If you think you have found a better way or a better method for a specific defense . . . pressure test it under extreme conditions . . . and if it consistently works add it to your tool box and replace what is no longer valid, but do not do so lightly. Make sure you fully understand why it’s better. Does it defend more potential threats, put you in a tactically superior position, etc . . .
I believe Krav Maga is the perfect system for personal defense, and the ultimate “BOLT-ON” to an existing system . . . but only if it keeps with the innate evolutionary structure that is was designed for.