So after being disappointing by the last 3 chaos releases (counting the daemons ones as a single since they are the same models

) I've been thinking about how I could do some chaos stuff that is a little more interesting then the
GW have released.
Right now the idea that has caught my attention is daemons heavily converted (or simply using different models) to make up a daemons army (still undecided on the system, I love fantasy and haven't played
40k since before 6th but I'm leaning towards
40k simply cos it's less models). The main problem with now is that I am entirely unsure what models to use and how to convert them
There is some cool stuff in this thread
http://www.dakkadakka.com/dakkaforum/posts/list/509448.page but I doubt my greenstuff skills are up to that standard (I wouldn't mind trying on a single model but not an army).
I was hoping Dakka might have some ideas or be able to point me towards some models that would suit my idea