Really wouldn't matter if it was a weather bird or just a slick J model they have the same flight deck configurations..   When you start talking about KC/HC/MC-130J now there is some differences.   The J model was made with a standard dark cockpit design concept using the same 1553 panels.  Those could easily be replicated by CS with help from Lockheed.  Problem would be the CNI-MU functionality which is close to a FMS but with differences.  That would need some work to get that close enough.  
Or they could just develop a glass configuration to get it better than the older E model instrument panels they currently have.  
But I still think we shouldn't hold our breathe as updates were supposed to happen since 2008 and haven't been completed.  I would be extremely happy if they did come out with some fixes.     We can hope.

Don