the cleaners carbine COULD'VE been really interesting

i will never understand why the cleaners carbine's charge DOESN'T charge from the sniper doing damage, it genuinely makes no sense to me as the idea is literally right infront of the dev's faces and they decided not to take it? it wouldve rewarded getting kills and then when somebody gets in your face you have an advantage with mini crits.. it would reward skillful gameplay by making close range 1v1s easier without being as easy as the jarate bushwacka combo and also not requiring 2 slots.. am i stupid or something? this seems like such a simple idea that would not only make the cleaners carbine worth using but would follow the same design choices they've made in the past with stuff like eye lander and kunai making you weaker in the beginning but stronger after playing well. im so confused its been bugging me for the longest time because this idea feels so obvious