I think there should be something you can do with all the extra jse capes you get. I've literally tossed hundreds as they only clog my inventory can't even npc them.
Possibilities are since you already it so you can trade 3 random 1s for 1 of your choice maybe trade 3 of the same one to an npc to one augmented one like you'd get from incursion. And/or trade them to the npc that takes wkr reive and bayld gear in exchange for some balyd