I vote to leave them off. They never meant squat anyway.
How many people with good high level green bar ratings have been run off of "not contributing" plus how many people with big red ones are actually reasonable members now who contribute but got marked down due to run in with someone in the past back when high level members could inflict a load of bars for good or bad with one click but now can't get enough good votes to offset their past numbers.
If you are bringing them back I would vote to have the whole voting system reset. Give everyone a clean slate and a chance to get re voted more fairly with the new system.