Wayback Machine - What IS That Thing?!

Come with me, intrepid traveler, two years into the distant past. Where the man who never finishes projects (MWNF) happens across an article on GW's website detailing two Rhinos kitbashed together into the awesomeness that was the "ASC". MWNF deludes himself into believing he absolutely cannot live without one, and sets about hacking and sanding and plasticard'ing and slathering glue.  Surely THIS will be the one project he finishes!

Fast-forward to present day.  The original ASC article is now defunct, vanished into the black hole of the interwebz, and there she sits... collecting dust.  Unfinished.  Kudos MWNF.  Well played.

Help me out here. What purpose should this bastardized monstrosity serve?  As you can see the plasticard work is solid, so it's worth salvaging. I have ideas - such as 4x Heavy Bolter sponsons and a pair of Twin-Linked Assault Cannons ala land battleship.  No doubt cool, but relatively unremarkable.  I think this model has a great deal more potential...  but I'm at a loss as to exactly what that potential is. Some sort of massive artillery piece?  Mobile C&C Prometheus-esque platform?  MLRS (Multiple Launch Rocket System)? 

Input please.  I have some time here while the primer dries on my new Ork Bikers and I flesh out exactly what I want to do with my World Eaters.  Time to get this thing close to some semblance of finished.

By the by:  if perchance you, dear reader, have an archived copy of the original ASC article, I'd be extremely interested in acquiring it for nostalgia purposes.