Put simply the current intentional feeder detection system is bad. We're working on a new way of detecting intentional feeders that is a couple of patches away. That won't be a 100% solution though but it will be an improvement. The update is focused on detecting the obvious intentional feeders that run it down mid from level 1. The biggest help to addressing intentional feeding in general is in-game reports, as it validates what we detect, helps us tune the system and in extreme cases helps Player Support investigate.