I feel like they need to tie mettle in the southern front to mettle level. If you go back into the southern front to grind some stuff for more relics than your first then it feels like you are being punished for doing ce and stuff while waiting for castrum to pop. In zadnor who cares if you die in Looks to Die For because the mettle reward is enough it is fine to die once to mechanics while you spam rez everyone else. In southern front if you die to say the math fate or red choctober, you make back maybe a third of the mettle you lost at the end. It really discourages actually participating in the instance instead of just waiting in the camp for Castrum to pop so you can get your relic drops and move on. If they tied mettle gain to mettle level then it wouldn't be a problem for people to go back into southern front. Maybe after I hit 10/10/10 on my mettle buffs I wouldn't care but as I'm sitting at 7/7/6 right now I'm just going to sit in the camp and wait on Castrum.