User blog comment:TheTobarMethod/The New PBE/@comment-5266525-20131023000111

This is missing the point of the changes.

There's always going to be a small proportion of players who simply don't care about testing and just want to dick around, but the rest of the userbase do care and actually contribute. When the cycle ends, a new wave of constructive players can be brought in, meeting Riot's goal of obtaining lots of varied feedback. They're even incentivizing joining for this reason by allowing you to keep your account for more than one cycle if your feedback is thorough and well-tested.