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)