Nice connversion ! But about the base i agree with Hortwerth.. and some more chaos details... spikes and stuff... leftovers from battle on the new base guns and 'eads ! :D
BTW.. REAPERMINI, you joking ? Or are you just plain numb ?
don't base it on THIS base. the dread won't be able to climb up there and looks silly. are you shure that you want this dread to be khorne's? the tentacles don't seem to be the favourite theme of khorne, don,t you think? and the skeleton inside the sarcophagus should be either placed deeper inside, or have some cables coming out of his torso & head and conneting it with the inside of the dread. the claws also look rather slaaneshi; khorne prefers some chain weapons - i think that the claws would fit better if they would be made of chainswords - you know, some "grippy" chainfist that can rip anything apart. also notice that the legs of the dread have large flat place to sculpt some khornic and chaotic details... take a deep breath, step back and look at the dread one more time. is there something in my comment that you can now see would look great on your dread? i hope i helped you a little (i suppose this mini isn't shown at its final stage :) ) keep converting!