Just an idea for those sick of getting baited by "Non Hostiles"

After the 100th time of shooting NPC's and having an agent run in my line of fire, what if devs added a feature make sure that it was a purposeful engagement? Such as aiming at a non hostile and select a button to engage them as a hostile, then of course any npc or player that's already hostile or rogue can be engaged on demand? Just wanted to hear some thoughts on this.