The current system works just fine AFIK. What problem are they trying to fix?
None - payback to unions for their support and GOTV efforts for Obie-the-wan.
That the unions don't have enough power according to, well, the unions. I actually heard one union guy on a radio interview talking about how under secret ballot the employees are too subject to intimidation by management. What a moron. Not sure how the guy can sit there with a straight face and say that. Secret ballots bad -- too vulnerable to intimidation. The unions are the ones who pushed for the secret ballot in the first place -- TO PREVENT EMPLOYER INTIMIDATION. I think they were right that time, not this time.