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)