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)