@ Michael - I feel something related to GW, but a parallel dimension /parody was a relatable content. That way the instructors can ooh/ahh the publiks intepretation of their content but it is still different and unique enough for its own verse. I was feeling between GW + expansion packs and GW2, what was the missing story, the rougue element that woke up all the dragons tsunamis and chaos.
Well, my intepretation of it was other beings. This could range from modern day New Yorker, Milanese, Londoner and the commonswine flu, being chucked through Portal and straight into the tail end of GW. The chaos that results is purely farcical and almost bumbling, but had catostrophic results (and maybe...it ends up with saving the day)
Put it another way, what if some bumbling Joe blog, bumbled into the backlot of a casting and stage studio of Guild Wars....
Pro Edit: I was thinking, that to start off - if some folk are amenable to this, that a moodboard (encompassing 6-10 key elements) are established.
The Moodboard
So for example, on the Left corner - are 6 enviro pieces of GW1, on the far Right, are 6 contrasting enviro pieces from GW2 (from what can be dissectable online. there was a large post of stuff that Daniel showcased at last years GDC, so much so he had to catch his breath inbetween)
Then, for the art direction and style folks want to establish and produce, you stick yoru 6 choosen references inbetween. The art direction aspect (can take weeks) but to make it quick and dirty, just choose 6 KEY aspects that is enough to make GW 1.5 different( eg. mars attacks) , + bonus (and maybe one thing that still ties it all in the GW world)
Why a Moodboard
For our daily work, it is essential to produce bespoke content for the client. Now, if you are lucky - lets say 2-3 clients want you to design a new asset, say a new action figure hero, but they all choose the same REF image (seriously, I gurantee you 60% of publishers/developers have the same image at some point) eg. Josh Holloway
Thus, you have two choices.
One, paint exactly what the client wants.
Two, paint what the client wants, but go far left, far right and middle whilst still retaining the bare essence of the supplied character ref.

To produce something unique and different, will require iteration and exploration. This means, doing the basic homework of reference hunting (applicable to ANY art asset - eg enviros, props, transports, creatures, hero chars) either with one owns photograpy, books, life drawing and... google (perhaps ignore the first 20 hits - chances are, some otehr studio has typed in the same variables, so do NOT get hooked on the ref you really like or offer to use it as a base for your client. But keep it handy - because if you're really, REALLY lucky - the client wants you to paint exactly the ref supplied)
In addition, the moodboard allows you to internally establish your own art direction. It helps you build, fill and enrich your visual database. Even if you've been doing the same art genre and style for 15 years, the moodboard (diligently explored) is crucial - much like warmups for martial arts so one does not get stale.
eg. Does the big Daddy needs rivets. Are these rivets large, small, smooth, shaven, welded, grooved on etc...