Like I had stated before, I had a full refinery and I was getting hit 7-10 times a day regardless of my medal count. I started the upgrades for both of my factories towards level 5 (which were at level 3 before the event), finished my castle, and I have both of my bunkers upgrading towards level 3 now. So I've pretty much finished all my major building upgrades requiring oil during this event. I didn't use any crowns to buy oil. I only used them to speed up certain upgrades to free up enough citizens to get all my buildings requiring oil upgraded before the global rush event ends. So I'm not unfamiliar with grinding for resources when I need to get things done. Like I said before, its a very difficult unit to defend your oil against and it takes it quite easily without deploying many troops. It completely bypasses all the walls and it can withstand a lot of punishment from the available defenses against it. Your argument for keeping them seems to be that you really need oil and having a unit that hands it over to you easily is best for everyone. This still doesn't change the fact that Global players are taking the hit and are unable to do much else about it. Anyways, I'm done with my oil needs for this age and all the rest will go towards upgrading my generals before I move on to Atomic.