Toggleable Assassinations...?

I’m pretty sure we’ve all had that moment when we want the quick back-smack, tap RB (or L if you’re a noob like Raigns), quick tap knowing there are enemies behind you, and get that full assassination that leads to your death. Has anyone mentioned anything anywhere about the possibility or inclusion of assassinations being toggleable? I’m thinking more MLG playlist here, I know for really highly fast competitive games I don’t want to worry about dying for such a lame reason.