Invisibility during assassinations

I want my invisibility to stay on when assassinating the enemy team. It doesn’t turn of when I walk and only flickers when sprinting I hate that it goes away when assassinating people. I picked it up on Regret right after the first spawn and sprinted over to the enemy spawn, before they were done with the first cross map shootout that always happens. I crouched and crept up for what I thought would be the most ninja -Yoink- to ever happen and assassinate their whole team, but after the first guy got his throat cut everyone saw my camo flicker and turned around to team kill me.
Why does my camo need to turn off to assassinate? I think it would be awesome to see a guy get killed by spin cycle or lawn dart from nothing. The guy is just standing there and boom gets body slammed by a ghost.
Please make this happen 343