Sig campaigns have been harder and harder to get into. As more people get higher ranks, and the more people get higher merits, the managers themselves will add criteria to filter out the bad.
It's the point I mentioned above, when a new generation of self-made higher rank users come (Senior Members and above), especially some of them has good trust points.
At that time, when it really happens, the past generation of shitty higher rank users will be rejected from campaigns, definitely.