I do same most of my friends on here (not connected to fb) I added when we were same quality, I drop the onces who seem not to be playing anymore and add new onces same quality.. Result the league is awesome this season (I hope it stay this way) we all started around 30Q, the top 5 has 36 and 37, the bottom 3 stayed there (no trade no activity no watching the games ect...)..
This season I traded early and managed to win the league by far against 7 teams around my quality!!
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The 1 guy that's not my friend in the league I dropped, he requested friendly (the basterd) just be4 our league game, I beat him twice that day btw I don't buy tokens, and get nearly NO offers where I am, so good achievement