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)