Top 20 is bad for "large" servers
But top 50 ISNT bad for "small" servers.
Fact of the matter is, no one is FORCING you to do plunder. If your server doesn't have enough to sustain 50, then maybe people need to get smart and not all flock to plunder always. Instead, within each group, work out a schedule or rotation, so that instead of everyone plundering everyday and getting 1-2 only, now only half the people plunder each day and everyone can get 3-4.
So let's transform the prisoner's dilemma problem into a cooperative game and find that Nash equilibrium, ok? Instead of coming to the forum and suggest something like this.
On a side note, I'm top 10, ftp, never plunder, hate plunder, so as far as my interest or view goes, I should be supporting this. But objectively speaking, this is "bad".
The 2xSS bit, of course, no one will ever disagree with, since it helps plunder and convoy at the same time.