What about "force" a little people to play fight clubs and make contacts here 15/20/25Lv+ progressive contracts? They could unlock new clothes or even preset ones, more weapons (even if you sacrifice 1 or 2 armas weapons with unique way of pre-modding - read, most of the time just poorly) to unlock through progression, titles, maybe skin, equipment slots and outfit slots and I guess that'll be a good move to utilize last locked slots with almost no effort