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)