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)