[Sarinpa1]

blade barrier requires five. Or four. Or three.
Considering everything to be mandatory to be maxed out is a poor way to look at things. You have the option to invest as you see fit, and I don't see a class passive that'd completely protect you from any and all guns from front. (Cobra is the closest, but y'know. Limited uses and all.) You don't need to return all the damage they were trying to inflict on you to protect yourself. You don't need a 100% (or higher) chance of deflecting.

Provide comparisons with other classes where they provide better bonuses for less point cost if you wish to balance things out. How much you can invest into is hardly an argument.