Upsides To Making A Portal To Heaven  
    To   Build   The   Factory  There   
  
                                          
 First Of All,  Real Estate:  The  Highly 
 Fractalized  Geometry  (Not  Proven  But 
 Likely  To  Be The Case)  Implies Almost 
 Unlimited Room; Even If The Portal  Tech 
 Would  Be  Stolen,  Chances  Of  Running 
 Into  A  Competitor  Is Close  To  None, 
                                          
 Secondly,  The  Resources:  Heavens  Own 
 Alchemical   Properties  (Proof  Exist!) 
 Makes  Most Base  Materials  Easily  And 
 Readily  Available.  Once The  Molecular 
 Movement  Patterns Are  Mapped Out,  Any 
 Compound   Can   Be  Created   Virtually 
 Without                            Cost. 
                                          
                                          
  
  Downsides  To  Making  A  Portal  To  
   Heaven  To Build The Factory  There  
  
                                          
 Current  Portal  Tech Takes Some  Energy 
 To Hold Open,  Which Isn'T A  Problem In 
 Itself.  Test Results However Has  Shown 
 That Without An Active  Tether, Heaven'S 
 Time  Flow Breaks Down  Completely. Even 
 A  Momentary Fluctuation Of  The  Portal 
 Would   Render    All    Remote   Assets 
 Practically  Lost.  Much  Care  Must  Be 
 Taken   To  Maintain  Portal  Stability. 
 (One  Option Could  Be Several  Portals)