Increasing the merit requirement for jr. Members without making any reductions anywhere else is the way to go.
Yes plus, make it retroactive like the last time.
5-10 merits are the way to go.
Actually, if one jmember is banned it requires only1 merit to rank up again with a new account. If we increase this level to 5 it will be harder to rank up abuse, buy/exchange merit and the spam will decrease.