I could understand the criticism that they throw off loot systems in normal/heroic though. To use myself as an example, my PR this patch is far and away highest on the team despite me also having top 3 highest ilvl. Why? I had good luck with bonus rolls so I never accrued that much gp. Seems kind of unfair in that it works against what systems like EPGP are trying to accomplish (even/fair distribution).
Otherwise, they're a nice addition to the game.