If I understand what you're asking, I would say that the bill is an excellent step in that direction. Giving third parties the ability to make complaints amounts to giving cultural communities a point of access for reporting problems they've had.
Third parties may submit complaints individually, but when a complaint is reported over and over again to organizations like ours, our members talk about it and usually it's pretty easy to pinpoint a particular problem, whether in a certain office or location. It's much easier for an organization like ours to submit a complaint and flag the different problems experienced by various communities. We also think it would bring some impartiality to the process.