This is only a little suggestion but I could go a long, long way. While on patrol you encounter mobs/ adds whatever you want to call them. But you know where they are. Where to go for this. Go to said location to find such and such. My idea is that we are patrolling. Why aren't the darkness also patrolling? Have random drop ships placing mobs or the vex teleport to random areas on the map what normally you would fly by on your sparrow. You wouldn't expect a vandal to sniper you on Venus when you think your safe. Riding along. When around the corner is a fallen patrol squad, also patrolling the area. In doing this not only are you making it more dare I say realistic (gonna get hate for that). But also give people a chance to get in there head that this is a game what will last. And of course don't put them on timers. Make it totally random. So that people can't exploit it. They wouldn't send out patrols every 30 seconds after one unit get KIA. Thoughts below please on this little suggestion what could make a big difference. Have a great day :)