Heavens no!
Don't abolish preliminary inquiries.
Without a preliminary inquiry some day some violent racist cop might actually face a trial in a court of law for his crime.
Let's not be too hasty. And let's not be too stupid to  give judges more power than they already have to make an unjust system more unjust.
  If we want a faster justice system we need to change the rigged economy so there are fewer people accused of crimes.