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)