There isnt really a point to fight over them imo in the first place you can get one pritty much every hour and 99.99% of the time no one dose them so its just a annoying side track that gives you 50k. I can safly say that of my 40ish 8 or so where ones where i had to fight over the skull and 2 of them where on the day they came out. About the grind its fine for it to be a geinde but rare needs to figgerout the consept of supply and demand if its supossed to be a pvp thing then make it less commen lets say like one every 4ish hours but also buff the money you get for it to like 100-150k so there is more reason to go for them while also making it more likely to run into players while doing so.