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)