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)