Jesus everyone is so mad. I say do both. Have one or 2 people run ahead and start the events, while the rest go through and kill mobs. If you stop and think nearly every single strike has a stopping point, a point the other people cant proceed till a certain action is done. While they are doing that you are cleaning mobs along the way to the event. The mobs will drop engrams for both sides, and the event should be midway or finishing by the time you get there. In every strike there is a stopping point, which gives the mob cleaners enough time to catch up, help, and continue in one fluid motion. Its when you try to separate these 2 into their own things do you really mess up the system. The only times I can see rushing ahead and not getting loot drops from your teams kills would have to be against the archeon priest strike, and mabey the Venus Ishtar sink strike only because of the distance. Everyone should play how they want to, and by trying to tell people how to play, they in turn should be able to tell you how to play, which just ends in a bunch of kids arguing on the internet on who's nuts are bigger because they are the highest lvl, pro, mlg, highest truskill and etc.