How about an Alembic 6 & 12 Doubleneck based on a small standard or tribute body shape with Alembic Crown headstocks?  Now THAT would just be WAY TOO COOL!  
Something to REALLY put the Gibson EDS-1275 to shame.  It should be named the RS-1276 (the RS being my initials - of course!).
 

This is an expensive thread to watch!  
 
John

I wonder how a tribute would look with an extended upper horn. (for balance reasons)
 
Or the small standard with the upper horn from a rogue.....time to start hunting good pictures.
Rami, start buying extra lottery tickets.

No, keep the upper horns original.  The Gibson EDS-1275 has short horns with the strap button behind the heel of the upper neck.  I don't mind the neck-dive.  I understand that the small standard body and the Tribute are both indirectly influenced by the Gibson SG design.  

 

A quickie using an image from this ( https://club.alembicguitars.com/info/fc_fittingtribute.html ) as base. I squeezed the body together a little. (original picture on the left)
 

Now THAT'S what I'm talking about!!!  
 

As you see, the shape of the area between the horns and neck are slightly altered but the basic shape of the body is intact.
Only aprox. 18% wider.  
 
There is a risk that the pegheads are too close with this design.
But twist the left horn out, and squeeze the electronics together slightly,
then the necks can be set a little further apart.

The tailpiece will be about 27 mm lower than on the picture, due to difference in scale (25.5 - 30).
That is with the end of the fretboard in the same location.

I think the necks are a little too close.  The body looks great though.  The Gibson is a useful example for proportion and neck angle.

I found these pictures on Ebay of a one off custom EDS-1275.    

 

 

  I suppose that this configuration makes sense if you play with different tunings.  Interesting though.

Latest image.
 

Rob,
 
many thanks for the great work you have done.
This looks really great.
Oliver (Spyderman)

Oliver,
 
Are you actually going to build it?
 
That's one Featured Custom article I'd look forward to reading.
 

I can only imagine what Rob's commission will be....    
Amazing work!

Rami,
well I need to think on how to finance this beast.
Eastcoast,
:-)
 
Oliver (Spyderman)