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)