Before nerfing it was a gamble - you expend full magazine and if you kill 2 enemies you have your reward. Now unranked mod is actually worse than no mod at all. It takes slot, capacity and absolutely unusable as it doesn't reward you for using it. From other side a fully ranked mod makes Grakata absolutely uncontrollable and using it isn't really fun anymore. Maybe with Prisma Grakata and Stabilizer it would work better, but was it really necessary to nerf this fun gimmick to such level that it requires another mod and relatively high level weapon to make use of it?