Sorry, I guess I was thinking more like 'competitive' rather than just having fun, ha ha.
I always did very poorly against my friends as 3 of them(!) chose orcs and gobbos and I don't think I won against them with my Chaos once!
I think taking advantage of having a nice horde of cheaper models with high attacks makes them quite powerful despite the low command.
My thinking about WM armies is even if they aren't competitive, pick the models you want to paint! For Chaos I painted 3 Dragon Ogre units as I like them so much. I proxy them as chariots (a much rarer to find unit) as I only ever played friendly games.
I have a very uncompetitive Dark Elf army as it has a Hydra and not enough cold ones, but the Hydra model is so fun I had to have it!