PGC implementing Friend League is a great idea. Seeing my rankings among my friends or within the world is great. But there are two well known problems. On one friend league challenge my friend was unable to make the cache requirement so he dropped a trackable into caches he had already found, and then retrieved it. PGC currently does not track trackables, so could not cope with this.
And secondly, Friend League keeps changing. Mostly it resets every Monday, but sometimes the points distribution changes, or the counts are not reset (at the moment they will not reset till October 3). And PGC cannot keep up.
For these reasons Friend League has close to no value at all within PGC - may as well remove it altogether.
It was a good attempt, alas it does not work.