It's not about the weekly quest or about getting mettle from Castrum. I'm doing all the relics, so doing 3 Castrums for its step is less grindy than anything else. I also want to earn mettle while I'm doing the relic rather than just grinding mettle to do relics faster. While I am waiting on Castrum I would prefer to do skirmishes and ce and help out. But, the point is that I literally have no incentive to help out spawning ce or doing skirmishes and instead am incentivized to just let others handle it since if I die to a ce I get punished when that ce is literally as hard as ce in zadnor that you don't get punished for dying in. It's not like this when you level in southern front the first time. If you die you still get more mettle from winning than you did from dying, unless you are particularly bad and die a lot. There is no incentive to help out in doing any of this once you are lvl 25, your one persons worth of contribution won't really make Castrum pop any faster, and plenty of reason not to help.