Well, since you have Wrongeye & Snapjaw in there you can take Bull Snappers, Blackhide Wrastlers, and/or Ironback Spitters and put them in Wrongeye's battlegroup. Rorsh & Brine also work for both Cryx and Orboros, which means you can have Gun Boars and War Hogs in Rorsch's BG.
Sorry, I missed this part when I first read your post.
George Spiggott wrote:... and still be viable.
It's not possible.