With the introduction of new system several Junior Members were demoted to Newbie rank.  But we witnessed flood of Newbies getting one merit and again promoted to Junior Member rank.  Such a flood was not witnessed in the past.  
One question which comes to my mind is whether only juniors are scammers?  And what if the scammer is senior member?

  If Junior Members are banned for signature then It will motivate members like me to rank up.  So at one point of time it will be beneficial to us though it tastes bitter presently.  
I agree S_Therapist why not ban ICOs?  because lots of people are being cheated via ICO scams.