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)