I'd rather just min cost black karma. Mari , anya, karma and echidna are the only characters i missed because i took a break after i created my account. Oh , and the avenger elf.
So , i will most likely try to max karma if possible
EDIT : that should be a serviceable team kira. Can;t say for sure since i haven't actually played this event , but considering this was ....what ? The 3rd event we ever had in aigis , it shouldn't be that hard to beat