Initially this post was just gonna show some pictures of some of my Chaos models that I had taken and never got around to posting about. But then I started thinking about the great things about Chaos and using them for the multitude of power armoured armies out there. I think lately with the release of Blood Angels and Space Wolves there are lots of Chaos guys out there that feel left out. Chaos is probably the easiest army out there to use as a "counts-as" army. All parts from every space marine model out there can be used in conversions. Below I will show some pics of models I have converted and what they are in the Chaos codex and what they can be in other books as well. Some models will be easily moved from book to book while others may only serve one purpose. This is okay, just don't try to pass off some half a$$ effort to make a model something it's not just so you can pull one over on your opponent for an easy win. I only play with a small group so it is easier for me to play counts-as without looking like a jerk.
Iron Warriors Dreadnought, easily used in all books without discrepancy as is case with any Dreadnought
Another view, I like this model
Chaos lord with wings, Librarian, Chaplain, SM Captain, stretch to Dante in Blood Angels
Chaos Sorcerer with wings, Librarian, Chaplain, SM Captain, stretch to Sanguinor in BA Codex
Chaos Termies used as Abaddon's Bodyguard, Wolf Guard Termies counts-as
Fantasy Pestigors used as Lesser Daemons in Chaos Codex, okay so just one use
I have more examples just no pics, like Plague Marines as Grey Hunters, Raptors as Assault Marines, Rhinos as Rhinos, Landraiders as Landraiders, etc.
I love building me some Chaos models as they are fun to build and look sweet. I see no problem using most of the ones I have as other things using other rulebooks. I don't do this to win, but to open up playing possibilities to vary my games. This can also give insight into other armies that you may encounter and give you ideas on how to beat them using the ole' Chaos 'dex. And if you're really into to Chaos stuff why not play with 3 or 4 different codexes to keep the game fresh but building and painting the models you enjoy the most. Which is what is important, this is a hobby after all. And maybe you'll even save some money, but probably not if you're like me and want lots of this cool stuff.
So, in conclusion, I think it's okay to use counts-as armies to a degree. I still want the equipment be the same regardless of books. It doesn't matter if the plasmagun has a few spikes on it or not, just that it is a plasmagun and not a meltagun or whatever you put in the guys hands. I think when playing "counts-as" that WYSIWIG is the most important element, not whether they worship Khorne or the Emperor.
Do you think all of the above models fit into the categories I put them in or do you think I am stretching the boundaries? On the other hand do you think the boundary could be pushed further with some of them? I know there are other ways to do a "counts-as" army besides using power armored dudes, but I think this is by far the most easily acceptable way in gaming circles.