Mutant mobs already drop 'special loot'. Their hides/food/bones have full power/higher stats. So you already receive a reward for killing them.
Using the items that we skin and take off the mobs and turning them into something wonderful is our job as players, whether that's gear, weapons, tools or food. Personally I would rather they not drop items other than the craftable items that we in turn use ...for our crafting. I don't want it to turn into a game where grinding our skills up becomes obsolete and unneeded because you can get something better off a mob; grab that epic weapon or kill mobs and turn your low level gear into great gear by adding that special gem, socket, idol, etc. That is one of the things I love about Xsyon, our crafting skills are needed and necessary. And the better your skills are, the better the items are. Trading up is a good thing.
Just tired of games that make crafters useless. If mobs start dropping 'loot', that's what it will eventually become. Sorry, I'm not for this feature.