There is a part of me that thinks I'm just bad and need to accept the limitations set before me, but a larger part feels like what I'm going to propose makes sense.
I think for all three armor types, the amount of armor required to turn on this passive should be reduced by one, down to 4.
It is still more than half of 7, so you cannot have more than one passive active at once. They are powerful enough a person should definitely only have one at a time.
It really just opens up the possibility for more hybridization. A 4/3 split will be better by the amount of the armor passive chosen and 4/3 makes more sense than 5/2 in regards to resource management.
I get the impression that being a hybrid could use some help and this seems like a simple way to encourage it.
Please share your thoughts.