My current plan for my actual marines (what is what I'm currently working on) is to use greenstuff and make their armour quite different. I'm starting by completely removing all markings and raised areas. Then, I plan on stripping them and then, after full stripped and fallen apart, I'm going to start GSing them. By the end of it, they'll look quite nice. If you didn't notice, I turned my Possessed into a squad of Chosen w/4 combi bolters and, now (not pictured), 1 heavy bolter. I think they're going to turn out nicely by the end.
Anyway, I'll crop and fix the pics so 1, it doesn't take so long to load and two, so there isn't that huge gap in between the models and the end of the picture.
As for the chaos lord, I love his model so much the farthest I'll go is with a cape :p I'm a little afraid I might ruin the model by adding anything else :p Many of my marines, by the end of this entire ordeal, will look quite pleasing to the eyes of Nurgle. Here soon, when I'm finished working on it, I'll post up some concept art of how I plan, or really would like, them to turn out. (By friday)
Do you think in their current state of a 1600 point army (and that was when the possessed were possessed, not chosen) they would be able to be used in a tourney (if I dry brushed white onto them so they had a little more detailed after painting them Chaos Black :p)?