I feel like it would be a good addition for hostile enemy's in patrol to reward vanguard experience on kill.
The amount of vanguard experience earned would be small like 1 to 5 per enemy.
I feel like this would add another fun layer to get vanguard rep.
This would only take place in patrol so you can not just farm a mission over and over to get a lot of experience.
You could even bring this as far as crucible and get say 10 experience for killing a guardian or 5 per kill and 10 for head shot kill.
Anyways just an idea I had tell me what you think.