not a big deal
Okay, so this is just really small idea. As a hunter, when you through your knife, if you miss you should be able to run to it and pick it up.
That would sort of defeat the purpose of the cooldown on the throwing knives. Besides, at later levels of the Gunslinger focus, you can have more than one throwing knife, and even get your knife back instantaneously if you manage a precision kill with one.
Considering how finnicky throwing knives are and how often I see people flinging them around by accident, and how often I do this too, I think some kind of a minor rework is needed for it.