This idea isn’t half bad. I’d say a constructable/destructable chesht that can be build with required materials. I’d say silver/wood/iron/bronze etc. with varying hp each type upgradeable by gold + drag scale and each type having different slots which is fixed. This will help bases to look neat and organize. A tribe vault chest wouldnt be bad either. Like member exclusive chest, elder exclusive chest and leader exclusive chest. In this way too raiding might be exciting since you are seeing those elder/leader chest. Picking lock skill seems broken though destruction is enough. Imagine your hard earned mats/equips being lost due to “picking lock skill” atleast earn in a much fairer way. Also since we’re talking about chest here I’d like to suggest new chest on underworld. Brown chest as we know contains random things such as mats, equips and books. A different looking “rare” chest can spawn in any underworld level which contains a fixed item. For example a golden colored chest containing only book but random among the type.