It was only after I parted with my virtual folding that it occurred to me that rather than outing the Dark Angels of the Dark Vengeance set that I'm still wary of buying I could use them as fallen modelling on various degrees of plague / rust / ruin etc.
Got one of these in Green / Sand washed and weathered sporting Tau decals for a Manga look. Fluff would be a rogue Bio-Engineered super-soldier project turned fully to Father Nurgle.
The APC would work nicely as a Rhino or Chimera and being non GW would allow me to go either way to field alternative list via use / abuse of ALLIES.
Could easily run as a Russ, Basilisk, Predator or Vindicator. Possibly even as something particularly funky from the Forgeworld garage. Could add some of their secondary weapon kits.
Combined with a possible swap-out of the Dark Angels with a willing participant and I have a substatial sized Sci-Fi army of grizzled scumbags willing to invade any set or rules you might like to profer.
It does occur that I might like to look at possible army lists at some point. Dodgy PDFs of the current Chaos and Gaurd codexes would be next I suppose followed by the new Chaos Codex whenever it appears.
Not sure if there's any form of Traitor Gaurd codex knocking about. I'm sure Google will let me know :)